“只有...才...”这个句型在英文中怎么翻译呢？

1. 用only+状语提前，句子部分倒装.
eg: Only after we asked him for three times did he agree to join us. 我们请了他三次，他才同意加入我们。
Only in my own room can I read books.
2. 用only强调主语
eg: Only you can persuade him to give up smoking.

另：很抱歉，这里想指出楼上这句话里的语法错误，无它意，只是学习交流：Only when you go abroad can you see the world. （only 引导时间状语从句,缺连词。）
或者,Only when going abroad can you see the world.(现在分词作状语，共用主句主语you。)

Sb. won't/shouldn't/…… do sth unless +that clause.
It's only when +clause that +clause。

用only...can就可以了,注意后面要用倒装的形式.
eg.Only go out can you see the world.

Only has.. Talent...