Question

观察下列句子，试着归纳其画线部分所包含的句型结构。

1．That made it possible for life to begin to develop．

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2．They produced young generally by laying eggs．

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3．So we feel as if there is no gravity at all．

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4．…but it will not be as strong a pull as the earth's．

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Answer 1

答案：
解析：

　　1．it在此句中充当形式宾语，真正的宾语是不定式“to begin to develop”。

　　2．by表方式，后加名词、代词或动名词。

　　3．as if/though似乎；好像；仿佛。

　　4．as＋adj．＋a/an＋n．(单数可数名词)＝such ＋a/an＋adj．＋n．(单数可数名词)。