Fill in the blanks with an appropriate form of the infinitive.
1. I don’t let my children ……………………….. up late.
Let is followed by object + infinitive without to.
2. Try ……………………….. late.
We make negative infinitives by putting not before the infinitive.
3. I made him …………………………. me my money back.
Make is followed by object + infinitive without to.
4. She was heard …………………………. that she was quitting.
The infinitive is used with to after passive forms of hear.
5. I would like to lie down and ………………………….. to sleep.
When we connect two infinitive structures with ‘and’, the second one is usually without to.
6. Rather than ………………………… anymore, I decided to go home.
Rather than is followed by an infinitive without to.
7. I have to feed the dogs as well as ……………………………. the plants.
When we connect two infinitive structures with as well as, the second one is usually without to.
8. She needn’t ............................................... any longer.
When need is used as a modal auxiliary verb, it is followed by an infinitive without to.
9. You look tired. Why not ………………………… some rest?
We can introduce suggestions with why not + infinitive without to.
10. Do you want to leave now or …………………………… until they arrive?
When we connect two infinitive structures with or, the second one is usually without to.
11. I am ready to do anything but ……………………….
When we connect two infinitive structures with but, the second one is usually without to.
12. Do you feel the earth …………………………….?
After feel + object, the infinitive is used without to.
Answers
1. I don’t let my children stay up late.
2. Try not to be late.
3. I made him give me my money back.
4. She was heard to say that she was quitting.
5. I would like to lie down and go to sleep.
6. Rather than wait anymore, I decided to go home.
7. I have to feed the dogs as well as water the plants.
8. She needn’t wait any longer.
9. You look tired. Why not get some rest?
10. Do you want to leave now or wait until they arrive?
11. I am ready to do anything but cook.
12. Do you feel the earth move?
