非謂語動詞選擇題,請詳解.

題目:

非謂語動詞選擇題,請詳解.
Everyone here will thank the firefighter for the things they have done to prevent fires and ______ (make) the environment safer .

解答:

to make 是對的.
to prevent fires (「預防火災」)的目的是to make the environment safer,這裡的to make the environment safer是做目的狀語的,和to prevent fires並列.
此處切勿受到prevent的干擾.
另外,此處的不定式符號to因爲是句中的第二個不定式,to也可省略,直接用make
再問: 那道題和這道題不一樣……我的多了個and
再答: 哦。那此處的(to) make the environment safer 和to prevent fires並列關係,因爲把to prevent fires去掉後意思基本不變。
再問: to是否要省略?
再答: 可以省略,如: It’s necessary for us to read more and have more practice. He didn’t want to go on working but have a rest.

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