标志一:only 置于句首,修饰作状语的副词、介词短语或状语从句或only if置于句首时,主句部分要用部分倒装结构。

  如:Only in this way can we learn English well.

Only if these conditions are fulfilled can the application proceed to the next stage.

 链接高考:

①Only when I left my parents for Italy     how much I loved them.(08’重庆)

A. I realized   B. I had realized    C. had I realized  D. did I realize

②It was announced that only when the fire was under control ___ to return to their homes.(08,江西)

A. the residents would be permitted       B. had the residents been permitted

C. would the residents be permitted       D. the residents had been permitted

③__________ you eat the correct foods ___________ be able to keep fit and stay healthy.(.08’江苏)

    A. Only if … will you             B. Only if … you will

    C. Unless … will you             D. Unless … you will

答案分别是:D、C、A

 注意:“only+主语”在句首时,不用倒装。

 如:Only Tom has been to Beijing.

  标志二:否定词never、nor、not、hardly、scarcely、 little、seldom、no、by no means、in no case、in no time、not until、no longer、under/in no circumstances(无论如何,决不)  等含有否定或半否定意义的副词或连词置于句首时,用部分倒装。

  如:Seldom/Hardly/Scarcely do I go to see a doctor.

By no means am I pleased with what he said.

In no case will I do homework.

In no time will this kid be leaving home.

No longer does he live here.

Under no circumstances should you lend Paul any money.你无论如何都不能借钱给保罗。

链接高考:

1.Not until the motorbike looked almost new     repairing and cleaning it.(08’陕西)

A. he stopped   B. did he stop    C. stopped he    D. he did stop

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