考前赢分第 27 天核心知识it 的用法it 有许多不同的用法，主要有下面几种情况，最常用的是：一、指前面提到的东西：1. He bought a book and gave it to me.（代表前面的中性名词，这类情况最多）2. He has a baby, he loves it（or him or her）.（It 可以代表 baby） He has got a pig，he has kept it five months.（It 可代表动物）3. He tried to get up, but found it impossible.（指句子前面某部分表示的意思） He learns music, and it will take him many years. I must say something, but it is impossible.4. He arrived yesterday, but nobody knows it. （ 代 表 前 面 整 个 句 子 ， 但 在 这 种 情 况 下 用 that 更好一些。）John hates children, and it is strange. That she knows him and they have been schoolmates, it is a fact.二、指句子后部的东西，此时的 it 通常是形式主语或形式宾语。用作形式主语：其中，不定式和从句作真正主语的这类句式很常见，动名词作真正主语的少一些，主要是以 no good, no use, useless, senseless, worthwhile, dangerous, nuisance, waste 等词作表语的句子中。 It’s no use talking to him. He won’t listen. （代表动名词）It is wonderful, swimming in summer.（代表动名词）（较少见）2. 用作形式宾语（置于含宾语补足语的动词后面），能用这种结构作宾语的动词常见的有： think, find, consider, judge, feel, make, take 等： I suppose it wrong to tell lies.（代表后面的不定式短语）He thinks it foolish to learn music.（代表后面的不定式短语）I think it impossible that he should ill-treat her. （代表后面的名词从句）I suppose it mysterious how he got rich.（代表后面的名词从句）3．一些表示喜恶等动词的后面不能直接带从句，虽然此时没有宾语补足语，但习惯上仍然要用 it 充当填补词。如：like, dislike, hate, appreciate, see to 等。He would be much appreciated if you could do him that favor. 如果你能帮他这个忙，他将十分感激。三．It 也可用来四、it 用于强调句型It is/was…that…结构：用来对句子的某部分加以强调。当被强调部...
