It is kind of you to say so. = You are kind to say so.
16. It is necessary ( for sb. ) to do sth.
该句型与上一个同属一个句型。如果不定式的逻辑主语是由for 引起,主句中的形容词通常是表示重要性,紧迫性,频繁程度,难易,安全等情况的形容词。常见的形容词有:
① important, necessary, natural
② easy, safe, common, normal, hard, difficult, dangerous, unusual, rare, impossible, pleasant 等。
在①中的形容词作表语可以用从句改写,如:
It is important for her to come to the party.
= It is important that she (should ) come to the party
17. It looks ( seems ) as if ... 该句型中it 无意义。 as if 引导一个状语从句。常译为,看起来好象 "如果与事实不相符合,则用虚拟语气.
It looks as if he is ill.(真的病了)
It looks as if he were ill. (没有生病)
It seemed as if he were dying.
2.形式宾语 :
18. We think it important to learn a foreign language.
该句型中的it 作形式宾语。为了记忆方便我们可称该句型为:
6123结构
6 指主句中常用的动词:think, believe, make, find, consider, feel ;
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