Simple, Compound and Conditional Sentences
A sentence that consists of one clause is called a simple sentence. A compound sentence contains two clauses joined by a conjunction. A sentence with if is called a conditional sentence.
A clause is a group of words that contains one subject and one verb. A sentence that consists of one clause is called a simple sentence.
- The girls are playing baseball.
- Sally found a good hiding place.
- I am eating my breakfast.
- Tom is wearing his new shoes today.
- Will you help me?
- The sky was very cloudy.
- I can hear the birds.
- Everyone was happy.
- Is it raining again?
A compound sentence contains two clauses joined by a conjunction such as and, or, but or so. There are two verbs, one on each side of the conjunction.
- Some people are always happy and some people are always sad.
- She opened the bag and took out a book.
- Do you want coffee or would you prefer lemonade?
- Is that a bird or is it a plane?
- John is good at English but he’s not very good at math.
- Michael wants to see Star Wars but his friends have already seen it.
- Tom dropped his sandwich so I gave him mine.
- It started to rain so we went inside.
To talk about things that are possible, you often use if in a sentence. A sentence with if is called a conditional sentence. For example,
- If it rains tomorrow, we shall not go to the beach.
In the if-clause, use a verb in the simple present tense. In the main clause, use shall or will and an infinitive.
- If there’s no rice in the cupboard, we’ll buy some more.
- If we don’t work hard, we’ll never learn.
- If we leave now, we’ll arrive on time.
You may also put the main clause before the if-clause.
- We’ll play indoors if it rains.
- You’ll get sick if you don’t eat good food.
- Sam will do well in his piano recital if he practices regularly.
Positive and Negative Sentences
A positive sentence tells you about something that exists or something that is happening.
- I like ice cream.
- Michael is my brother.
- The train leaves at five o’clock.
- I’m feeling really tired.
- She’s finished her homework.
- Dad is in the kitchen.
- There’s a cartoon on TV.
A negative sentence contains the word not or another negative word. Negative sentences tell you that something does not exist or is not happening.
- I’m not very good at math.
- Tom isn’t as tall as Alan.
- We didn’t hear you shout at us.
- Meera hasn’t read the Harry Potter books.
- People can’t see very well in the dark.
- There’s nothing interesting on TV tonight.
- We’ve never been to China or Japan.
- Nobody knows my secret.
- There are no coins in my pocket.