It’s easy (difficult, hard, important, possible, impossible, comfortable, necessary…) + for sb. to do
It’s kind (nice, stupid, rude, clever, foolish, thoughtful,
thoughtless, brave, considerate (考虑周到的),mean(卑鄙的), silly, selfish (自私的) )后加 of sb. to do
Ⅲ、非谓语动词作表语
The purpose of new technologies is to make life easier, ____ it more difficult.
(99 N)
A. not make
B. not to make C. not making D. do not make
动词不定式短语 to make life easier 及 not to make it more difficult 都作 purpose 的表语。
注意两个问题:
To see is to believe
二是时间问题:一般来说,不定式作表语都表示该动作发生在将来,故在表示“目的(aim, purpose)、愿望(wish, hope)、梦想(dream)、需求(need)”等名词作主语时其表语应该用不定式。动名词作表语一般用来表示“身份、职业”等。
My job is teaching.
My dream of life is to become a scientist.
另外要特别注意现在分词和过去分词作表语的区别。
现在分词说明主语所具有的性质或特征:The speech was inspiring.
过去分词多表示主语所处的状态或表被动:The students were greatly inspired.
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