Chapter 01 : Writing with appropriate grammar and vocabulary
| Introduction Effective writing requires more than simply putting words together; it requires clarity, accuracy, and a strong command of sentence structures. In this chapter, you will learn essential skills for constructing grammatically correct sentences. You will explore independent and dependent clauses and learn how to form simple, compound, and complex sentences. You will also develop accuracy by ensuring proper subject–verb agreement across various contexts. In addition, you will learn to use field-specific vocabulary to communicate ideas clearly in both academic and professional settings. The competencies developed will enable you to write with precision, coherence, and confidence. |
| Think Correct sentence structures and precise vocabulary make your writing more transparent and effective. |
Constructing grammatically correct sentences
A sentence is a complete set of words that conveys meaning. A sentence may be composed of one or more clauses. A clause is a group of words that contains a subject and a predicate. In the sentence: “I don’t like ocean because sharks scare me,” the words “I don’t like the ocean” make an independent clause, and the words “because sharks scare me” form the dependent clause.
An independent clause (or main clause) is a complete thought, and it can stand by itself to make sense. A dependent clause (or subordinate clause) is an incomplete thought, and it cannot stand by itself to make sense. You can spot a dependent clause by identifying a subordinating conjunction. The subordinating conjunction creates a dependent clause that relies on the rest of the sentence for meaning. The following are some examples of subordinating conjunctions.
| Activity 1.1 Choose one page from a newspaper, textbook, or online article and do the following: 1. Identify five sentences from the text. 2. For each sentence you have identified:
3. Explain in two to three sentences how the clauses you have identified affect the meaning of each sentence. |
Types of sentences
A sentence can serve various purposes, such as making a statement (e.g., “I’m studying.”), giving a command (e.g., “Go away!”), expressing an exclamation (e.g., “I’m so excited!”), or asking a question (e.g., “What time is it?”). In a written text, sentences used to form paragraphs can be classified as simple, compound, or complex. Below is a description of each of these sentence types, along with relevant examples.
Simple sentences
A simple sentence consists of a single independent clause. The sentences below illustrate this structure:
(i) Juma went to the party last night.
(ii) Who is your best friend?
(iii) She ate her lunch early.
In English, simple sentences commonly follow the Subject–Verb–Object (SVO) word order. This structural pattern is illustrated in the table below.
| Subject | Verb | Object |
| Hamisi | will explore | the unusual object |
| Mwalimu | has broken | the cycle of poverty |
| My father and mother | are planning | a vacation |
| The bright girl | will guide | the students |
| That young boy | fixed | the computer |
| Reading novels | improves | language skills |
| What she presented | surprised | the committee |
| Some students | joined | the science club |
| My grandfather | sings | gospel songs |
| To succeed in life | requires | discipline and perseverance |
Activity 1.2
Walk around your school environment and explore noticeboards, posters, classroom signs, and announcements. Then do the following:
Some verbs can take two objects in sequence. The object that appears closer to the verb is known as the indirect object, while the one that appears farther from the verb is called the direct object. Semantically, the indirect object typically functions as the recipient, beneficiary, or addressee of the action. By contrast, the direct object denotes the entity that is acted upon or changes state. Sentences containing both an indirect and a direct object follow the structural pattern Subject – Verb – Indirect Object – Direct Object, as illustrated in the table below.
| Subject | Verb | Indirect Object | Direct Object |
| I | gave | my sister | one million shillings |
| My parents | told | me | stories |
| We | have paid | him | some money |
| They | are asking | the guest speaker | some questions |
Exercise 1.1
Rearrange the words to form correct sentences using the double-object structure.
Example: my mother / a birthday cake yesterday / me / baked
→ My mother baked me a birthday cake yesterday.
Sometimes, an indirect object - namely, the recipient, beneficiary, or addressee of an action - is introduced by a preposition, resulting in the pattern Subject - Verb - Direct Object - Indirect Object. In such cases, the indirect object appears farther from the verb and is realised as a prepositional phrase, that is, a group of words headed by a preposition.
| Subject | Verb | Direct Object | Indirect Object (Prepositional phrase) |
| My friend | has sent | a letter | to me |
| His parents | bought | a computer | for him |
| The woman | brought | some snacks | for her children |
Exercise 1.2
Rewrite the following sentences by changing the word order from Subject – Verb – Direct Object – Indirect Object to Subject – Verb – Indirect Object – Direct Object.
Example:
My brother showed his new wallet to me.
My brother showed me his new wallet.
Compound sentences
A compound sentence consists of two independent clauses. These clauses are commonly joined by a coordinating conjunction (for, and, nor, but, or, yet, so), which is usually preceded by a comma.
The following are examples of compound sentences.
| Activity 1.3
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Complex sentences
A complex sentence contains one independent clause and one or more dependent clauses. A subordinating conjunction connects the clauses in a complex sentence. Every complex sentence must include at least one subordinating conjunction. Common subordinating conjunctions used to form complex sentences include although, because, when, if, and while. The following are examples of complex sentences.
(i) She went to class, although she was sick.
(ii) When John arrived at work, he realised that he had forgotten his phone.
(iii) While I enjoy classical music, I prefer rock and roll because I play the drums.
| Activity 1.4 1. Observe something happening around you (a classroom activity, a school event, a weather change, a sports practice, etc.). 2. Write one complex sentence showing:
3. Circle the subordinating conjunction in each sentence you have composed. |
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Exercise
1. Make compound sentences by filling in the blanks with an appropriate coordinating conjunction provided in brackets.
(a) Leave the house at once, __________ I will call the police. (and, but, or)
(b) I called her many times __________ she didn't answer the phone. (and, but, though)
(c) He is intelligent __________ he is honest. (or, but, and)
(d) He is old __________ he is active. (and, or, but)
(e) The team worked late into the night, __________ they failed to meet the deadline. (yet, so, and).
2. Join each of the following pairs of clauses using a coordinating conjunction to form one complex sentence. Use the coordinating conjunctions provided in brackets.
Example
My dog waited at the door for us. We got home (until)
(a) We do all our homework. We won’t be allowed to play (unless).
(b) My sister gets in trouble. My father makes her weed the garden (whenever).
(c) Mary was sick. She insisted on attending the class (although).
(d) I had to go to the dentist. My back tooth started to hurt (because).
(e) I finished my project. I asked my mother to check it for mistakes (when).
3. Complete the following complex sentences by filling in the blanks with appropriate subordinating conjunctions provided in the box.
| before since so that unless when whenever wherever whether while |
(a) __________ we had a hard time finding our home, we consulted the neighbourhood map.
(b) __________ the bus reached the final stop, everyone got off.
(c) __________ you study hard, it will be difficult for you to pass your exams.
(d) The driver was fined __________ he dropped the passenger at a wrong station.
(e) The students were asked __________ they were happy to attend classes over the weekend.
Subject-verb agreement
For a sentence to be regarded as grammatically correct, the subject and the verb of the sentence must agree. A singular subject requires a singular verb, and a plural subject needs a plural verb. Thus, the subject and its verb are said to agree in number. This fundamental rule is crucial for sentence coherence and clarity.
In the present tense, the base form of a verb is used with all plural subjects and the pronouns I and you. For singular subjects other than I and you, -s or -es is usually added to the base form of the verb. The following examples show subject-verb agreement in the present tense.
| Singular | Plural |
| I walk | We walk |
| You walk | You walk |
| He/she/it walks | They walk |
The irregular verbs be, have, and do must agree with the subject, whether used as main verbs or helping verbs.
Examples
1. I am a botanist. He is a botanist. They are botanists. (main verbs)
2. She is working. You are studying. (helping verbs)
3. I have a job. She has a car. (main verbs)
4. He has planted a tree. They have planted trees. (helping verbs)
5. He does well. They do the job. (main verbs)
6. It does sound good. We do work hard. (helping verbs)
Basic rules of subject-verb agreement
Rule 1: Singular subjects take singular verbs. Example: The dog barks at strangers. Plural subjects take plural verbs. Example: Dogs bark at strangers.
Rule 2: Subjects joined by ‘and’ are usually plural and take a plural verb. Example: The teacher and the student discuss the assignment. If the compound subject refers to a single entity, it takes a singular verb. Example: Rice and beans is a common meal in many countries.
Rule 3: When subjects are joined by ‘or’ or ‘nor’, the verb agrees with the subject closest to it. Example: Neither the teacher nor the students are prepared. Example: Either the teacher or the student is responsible.
Rule 4: Singular indefinite pronouns take singular verbs (each, everyone, someone, etc.). Example: Everyone loves a good story. Some indefinite pronouns can be singular or plural depending on the context (all, some, none, etc.). Example: All the cake is gone. All the cookies are gone.
Rule 5: Collective nouns (team, group, class, etc.) may take singular or plural verbs depending on whether the group is acting as a unit or as individuals. Example: The team wins the match / The team are arguing among themselves.
| Activity 1.5 1. Collect five sentences from any source, such as social media posts, schoolbooks, signboards, or announcements. 2. Check each sentence for subject-verb agreement. 3. If any sentence has an error, rewrite it correctly. 4. For each correction, explain which rule applies (e.g., singular or plural subjects, collective nouns, or indefinite pronouns). |
Exercise 1.2
1. Choose the correct verb form to complete each sentence.
2. Each of the following sentences contains a subject-verb agreement mistake. Correct them.
3. Construct five sentences with correct subject-verb agreement using the following types of subjects:
Advanced rules of subject-verb agreement
Rule 1: Titles, names, and plural forms: Titles of books, movies, and other works take a singular verb. Example: “The Man of the People” is a popular novel. Words that are plural in form but singular in meaning take a singular verb. Example: Mathematics is a challenging subject.
Rule 2: Inverted sentences: In sentences where the subject follows the verb, ensure proper agreement. Example: There is a book on the table / There are many books on the table.
Rule 3: Amounts and quantities: Expressions of amount or quantity take a singular verb when considered as a unit. Example: Five hundred is too much to pay for a cup of tea.
Rule 4: Relative clauses: In relative clauses (a part of a sentence that describes a noun, and usually begins with words like ‘who’, ‘which’ or ‘that’), the verb agrees with the antecedent (the noun the clause refers to). Example: She is one of the students who have passed the exam.
Rule 5: Uncountable nouns: Uncountable nouns take singular verbs. Example: The information is reliable.
| Activity 1.6 1. Find examples of the following from newspapers, textbooks, or online articles:
2. Copy them and explain why the verb form is correct. 3. Write each sentence, changing the subject, and adjust the verb accordingly. |
Exercise 1.6
1. Each of the following sentences has a subject-verb agreement error. Identify the error and rewrite the sentence correctly.
2. Construct one sentence with correct subject-verb agreement using each of the following types of subjects:
Using field-specific vocabulary in communication
Every field of study has its own specialised words, known as field-specific vocabulary or technical terms. These are words that people in a particular area use to talk about ideas, tools, or activities related to that field. For example, in science, we often encounter terms such as experiment, solution and energy. In commerce, we use terms such as profit, goods, and customers. Conversely, we discuss harvest, irrigation, fertiliser, and related terms in agriculture. Learning and using these words correctly helps us to communicate clearly and confidently in both speaking and writing. The following table shows examples of field-specific vocabulary.
| Field | Common words | Example sentence |
| Science | experiment, energy, evaporation, temperature, solution | The experiment showed that heat changes water into steam. |
| Commerce | goods, profit, customer, market, supply, demand | The shopkeeper increased the price because demand was high. |
| Agriculture | harvest, fertiliser, seedling, irrigation, yield | Farmers use irrigation to water their crops during dry seasons. |
| Health | disease, treatment, diagnosis, patient, nutrition | The physician advised the patient to eat a nutritious diet. |
| Technology | computer, software, database, internet, application | Students use computer applications to do their assignments. |
| Activity 1.7 1. Choose one field (science, commerce, technology, agriculture, or health). 2. Find a short YouTube video, news item, or textbook paragraph related to the field you chose in 1. 3. Identify eight to ten field-specific words used in the content. 4. Create a mini glossary by writing:
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Revision questions
1. Rearrange the following words in correct order to make complete simple sentences:
2. Rewrite the following sentences by changing the word order from Subject – Verb – Direct Object – Indirect Object to Subject – Verb – Indirect Object – Direct Object:
3. Make compound sentences by filling in the blanks with an appropriate coordinating conjunction provided in brackets.
4. Choose the correct verb form to complete each sentence.
5. Read the passage below and underline all field-specific words. Then, explain which field this passage belongs to? What technical words can you find?
Modern farmers use machines such as tractors and power tillers to prepare their land for planting. They also apply fertilizer to increase the yield. After harvesting, some farmers sell their produce directly to the market to earn income.
6. Write a short paragraph about one of the following topics. Use appropriate field-specific vocabulary in your paragraph.