Choose the correct word to fill in the gap
- We have to leave by seven o'clock.
Use "have to" for obligation and responsabilities.
- If you want to be healthy, you shouldn't smoke.
Use "should" for giving advice.
- He's interested in politics.
"To be interested in" is the correct passive infinitive.
- What will you do if he doesn't come?
In conditional 1, we use the simple present in the if clause.
- Would you mind giving me a hand?
The verb "mind" is followed by the gerund - ing - form of the verb.
- I tried my best but I couldn't do the exercise.
"Could" is the past of can which expresses ability and permission.
- I missed the train, so I had to take the next one.
"Had to" is the past of both "have to" and "must".
- I have known them since we were children.
Use the present perfect (continuous) with the time expression "since".
- He's already eaten.
We use "already" in positive present perfect sentences to show that something has been done.
- I've met the person who lives in that house.
Use "who" as the relative pronoun to connect phrases about people.
- They've been to France, haven't they?
This is a question tag. The question tag is formed by the auxilliary verb in the opposite sense of the principle statement (here negative because the principle phrase is positive) followed by the subject.
Hey Tom! I haven't seen you for a long time!
Use the present perfect with the time expression "for" to express a period of time up to now.
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