则省掉”to”,但变为被动语态时，
则要带”to”.
e.g. We hear her sing next door.
She is heard to sing next door .
C. 此句型变为被动语态时，只有一种情况。
e.g. They saw him steal the old man’s money.
He was seen to steal the old man’s money .
英语五大基本句型练习
1.I am sorry to have kept you ____.
a. wait b. to wait c. waiting d. waited
2.She found her dog ___over by a car on the road.
a. run b. ran d. to run d. running
3. Rose is going to have her hair _____.
a. do b. done c. did d. doing
4. She felt somebody ___her.
a. touched b. touches c. touch d. to touch
5. She taught him _____speak English.
a. how b. how could he c. how he could d. how to
6.He didn’t enjoy the play because he ____.
a. was boring b. bored c. was bored d. boring
7.I will make your dream ____.
a. comes true b. to come true c. coming truly d. come true
8.He warned ____home .
a. us to not go b. us not to go c. we not go d. us not go
9. Canned food does not go ____.