一.定义：在复合句中起主语作用从句 二.结构：关联词➕主语从句剩余部分 三.关联词： 1.从属连词：that, whether 2.连接代词：who, what, which, wh-ever 3.连接副词：when, where, how, why, wh-ever ※注意：主语从句放在句首时，整个句子会显得笨重，为了使句子结构平衡，优美，常把主语从句移到后边，前边用引导词"it"做形式主语。 四.it 作形式主语的运用 1.It➕is/was➕名词（名词词组）➕主语从句 It's a fact … It's a pity … It's a shame … It's an honour … It's a question … 等等 E.g. It’s a pity that you missed the exciting football match. It remains a question whether he will come or not. 2.It➕is/was➕形容词➕主语从句 It's natural … It's obvious…It's fortunate …It's possible…It's unlikely… 3.It➕is/was➕不及物动词（vt.）➕主语从句 It's seems…It's happened… It's appears…It's possible…It's turns out… 4.It➕is/was➕过去分词➕主语从句 It's known… It's said…It's reported…It's decided…It's announced…5.其他形式 It doesn't matter…是无关紧要的 It makes no difderence…毫无区别 It is of little consquence that…无关紧要 It suddenly struck me（occurred me）that… 我突然想到…
美食家Kitty
