题目内容

20.我们应保护环境,以免它受到破坏.
We shouldprotect our environmentfrom being destroyed.

分析 protect…from

解答 答案:protect…from.
本句考查短语protect…from保护某人或某物不受…伤害;故答案为protect…from.

点评 prevent…from,keep…from还有stop…from 这三个句式的意义都是:阻止某人做某事.或阻止某事的发生,而protect…from是表示保护.不受伤害
prevent…from 和stop…from 用在主动语态中from可以省略.
keep…from在表示此意时,from不可以省略因为.keep doing 是使.处在…状态中的意思.
后面用动名词的被动形式.
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.

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