1、only 的用法.only位于句首修饰壮语要倒装 只有倒那时我才将会有机会实现我的梦想. will 是谓语的一部分因倒装提前了.再如 only in this way can you learn english well 是only引起的倒装句,will 是助动词,如果这个句子正过来说就是 I will have a chance of achieving my dream only then 在句首的only如果后面跟了副词、介词短语或从句等状语，则主句用倒装结构。

2、如only后跟 的是主语，就不用倒装结构了。

3、例如: 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) 注意，only和所修饰的状语如果不在句首，则不倒装。

4、如: The boy was helped out only when his father arrived in a hurry. Only then did he realize the importance of English 只有在那时候他才意识到英语的重要性。

5、only then ,是过一小会儿的意思，一般用在句首，引导倒装句。

6、例句Only then did he realize the importance of English. 解析:在句首的only如果后面跟了副词、介词短语或从句等状语，则主句用倒装结构。

7、如only后跟的是主语，就不用倒装结构了。

8、再比如 Only when the war was over in 1918 was he able to get back to work.(倒装句) Only five men were hurt in the accident.(不倒装)。