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．…she had had it delivered from the pump to her house every day．

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2．Only if you put the sun there did the movements of the other planets in the sky make sense．

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3．He placed a fixed sun at the centre of the solar system with the planets going round it and only the moon still going round the earth．

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Answer 1

答案：
解析：

1．have sth．done句式 　　2．only引起条件状语从句，主句部分倒装 　　3．with＋宾语＋宾语补足语