Question

20．我們應保護環境，以免它受到破壞．
We shouldprotect our environmentfrom being destroyed．

Answer 1

分析 protect…from

解答 答案：protect…from．
本句考查短語protect…from保護某人或某物不受…傷害；故答案為protect…from．

點評 prevent…from，keep…from還有stop…from 這三個句式的意義都是：阻止某人做某事．或阻止某事的發生，而protect…from是表示保護．不受傷害
prevent…from 和stop…from 用在主動語態中from可以省略．
keep…from在表示此意時，from不可以省略因為．keep doing 是使．處在…狀態中的意思．
后面用動名詞的被動形式．
We must prevent the water from being polluted．
What stopped him from coming here．
The heavy rain kept us from coming on time．
I am sorry to have kept you waiting．
You had better wear sunglasses to protect your eyes from the sun．