“only+状语置于句首引起的倒装句”基本用法

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副词only置于句首,强调方式状语、条件状语、地点状语、时间状语等状语时,主句要进行部分倒装。

如果被only所强调的状语为状语从句,该状语从句不倒装,只对主句进行倒装。

例如:
Only in a big city was it possible to buy a new wheelchair.
只有在大城市里才能买到新轮椅。

Only when we had studied the data again did we realize that there was a mistake.
只有当我们再次研究了这些数据的时候,我们才意识到出了一个错。

Only because there were some cancelled bookings did he get some tickets in the end. 一些预订被取消了,他才得以买到了几张票。

注意:如果放于句首的only所修饰的不是状语时,该句不用倒装。

例如:Only John can save me.
只有约翰能够救我。

Only some of the children passed the examination.
只有几个孩子通过了考试。

〔考题1〕____ by keeping down costs will Power Data hold its advantage over other companies. (2006浙江)
A. Only
B. Just
C. Still
D. Yet
〔答案〕 A
〔解析〕放于句首的only修饰方式状语by keeping down costs时,全句要进行部分倒装,而just, still, yet都无此用法。

〔考题2〕Only in this way ____ to make improvements in the operating system. (2003上海春)
A. you can hope
B. you did hope
C. can you hope
D. did you hope
〔答案〕 C
〔解析〕only在题干中放于句首并修饰方式状语in this way,全句应进行部分倒装。

又由于该句不是介绍过去的情况而是表述现实的一种状况,所以不应采用一般过去时,本题应选C。

〔考题3〕____ can you expect to get a rise. (2001北京、安徽春)
A. With hard work
B. Although work hard
C. Only with hard work
D. Now that he works hard
〔答案〕 C
〔解析〕题干中句子的结构显然为部分倒装语序,四个选项中只有C选项修饰方式状语with hard work的only可以引导倒装句,因此本题应选C。

〔考题4〕Only when your identity has been checked, ____. (2003上海)
A. you are allowed in
B. you will be allowed in
C. will you allow in
D. will you be allowed in
〔答案〕 D
〔解析〕放于句首的only修饰when引导的时间状语从句时,主句应进行部分倒装(从句中不进行倒装)。

〔考题5〕Only then ____ how much damage had been caused. (2006陕西)
A. she realized
B. she had realized
C. had she realized
D. did she realize
〔答案〕 D
〔解析〕放于句首的only修饰时间状语then时,主句应进行部分倒装,而且主句中“她意识到……”这一过去的动作对应的是“已导致损失”这一发生得更早的动作,所以下划线应与后面宾语从句中的过去完成时相呼应,采用一般过去时的形式,据此可以分别排除选项A、B和C而选出D。