only倒装句用法

当“only + 状语”处于句首之态时，习惯上其后需采用部分倒装形式。此处，only 之后的状语能够为副词、介词短语、从句等等。在句首的 only 倘若其后接的是副词、介词短语抑或从句等一类的状语，那么主句就要用到倒装结构。然而，若 only 后跟随的是主语，则无需采用倒装结构。

1. 当“only + 状语”位于句首之际，习惯上其后会用到部分倒装。其中，only 之后的状语可以是副词、介词短语、从句等。

Only in this way can we learn English. 唯有如此我们方能学会英语。

Only then did I understand what she meant. 仅到彼时我才领会她的意旨。

Only by shouting was he able to make himself heard. 他唯有呼喊才可让自身被听闻。

请注意，当 only 后作为状语的是从句时，从句不要应用倒装，需要部分倒装的乃是主句。比如：

Only when it rains do you feel cool. 仅当降雨之时您才会感到些许凉爽。

Only when he returned home did he realize what had happened. 当他返回家中时，才明晰发生了何事。

Only when we landed did we see how badly the plane had been damaged. 我们仅是在着陆后才看到飞机受损的严重程度。

2. 在句首的 only 倘若后面跟随了副词、介词短语或者从句等状语，那么主句就需运用倒装结构。比如 only 后跟的是主语，就不必采用倒装结构了。比如：

Only when the war was over in 1918 was he able to get back to work.

Only in this way can you learn English well.

Only after a bitter struggle was the aim achieved.

Only the teachers are allowed to use the room. (不倒装)

Only five men were hurt in the accident. (不倒装)