1.It was raining heavily.They didn’t have any choice but _____ at home.

A. to stay　　　　 B. stay

3.　　　　 I can’t help _____ that we have no right to destroy nature.

A. think　　　　 B.thinking　　　 C.but think　　　　　 D.but to think

(do) but do

sth. but to do

2.　　　　 On hearing the news she can’t help _____.

A. laugh　　　　 B. laughing　　 C.but laugh　　　 　　　D. but to laugh

1.　　　　 I’m afraid I can’t help ____the house because I have a meeting to attend right now.

A.clean　　　　 B.cleaning　　　 C. but　 clean　　　　　 D. but to clean

3.　　　　　　　　　　　　　　　　　　　　　　　　　　　　 Answer the following questions.

(1)why is it wrong in films and stories to show dinosaurs and people together?

_________________________________________________________

(2)　　　 Why do you think that humans are the cleverest animals on the earth?

六 语法

can’t help but do

can’t help to do

(can’t) help doing

2.　　　　　　　　　　　　　　　　　　　　　　　　　　　　 Put the order of development of life into a time line.

A　 insects and amphibians appear

B　 a solid ball

C　 reptiles appear

D　 a cloud of dust

E　 shellfish and other fish appear

F　 dinosaurs appear

G　 small plants grow on the water

H　 plants begin to grow on dry land

I　 presence of water

J　 mammals (including humans) appear

D _____ ______ _____ _____ _____ _____ _____ _____ _____

1.　　　　　　　　　　　　　　　　　　　　　　　　　　　　 Think about what you have read and make choices.

Why was the earth different from other planets?

A .It produced a lot of heat.　 B . The water remained.

C .Water disappeared.　　　 D . It was the oldest planet.

Why was life able to develop on the earth but not on other planets?

A . The earth had a solid shape.

B . The earth did not have barmful gases in its atmosphere.

C . The water stayed on the earth but not on other planets.

D . The earth was not too hot and not too cold.

Why was it necessary for plants to grow before animals?

A . Animals needed plants to protect them from the sun.

B . Plants provided oxygen for animals to breathe.

C . Animals could hide from hunters in forests.

D . It was easier for plants to grow.

(1)　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 What problem is caused by human beings?

A . They exist everywhere on the earth.

B . They cause global warming.

C . They find new methods of growing crops.

D . They enjoy hunting and fishing.

4.　　　　 困在了沙漠之中，于成纯只能希望自己能活下来。(be caught in)

3.　　　　 困在Omaha Beach上，他们只能不顾机枪扫射向前冲。(be caught)