Question

It was          back home after the experiment.

A．not until midnight did he go	B．until midnight that he didn’t go
C．not until midnight that he went	D．until midnight when he didn’t go

Answer 1

C

試題分析：句意，直到午夜，他才做完實驗回家。not... until…句型的強調(diào)句的基本結(jié)構(gòu)：It is / was not until + 被強調(diào)部分 + that + 其他成分，因為句型It is / was not…已經(jīng)是否定句了，所以that后面的從句要用肯定句，切勿再用否定句，故選C。
點評：一定要掌握強調(diào)句的用法。強調(diào)句的判斷，一般說來，如果把句子中的It is/was…that去掉，稍加調(diào)整語序，能還原成完整的句子，并且句子意思依然完整，則為強調(diào)句型，否則為其他從句。我們應(yīng)熟記這些基本規(guī)則。