除非他本人来邀请我,不然我是不会去的。
I wont attend his birthday party unless invited (=unless I am invited). 除非被邀请,否则我不
去参加的生日晚会。
句型15
when引导的从句
when除了用来引导主语从句、宾语从句、时间状语从句、表语从句和定语从句,还有一种用法值得关注,那就是when引导并列分句,意思是这 时突然;就在那时,强调另一个动作的突然发生。常用于以下句型中:(1)、主语 + be doing when意思是正在做某事这时(2)、主语 + be about to dowhen(3)、主语+be on the point of (doing) when意思是正要去做某事这时
[例句]
One day Chuck was on a flight across the Pacific Ocean when suddenly his plane crashed. 有一天,Chuck正在太平洋上飞行,这时他的飞机突然爆炸了。
I dont know when he will arrive. 我不晓得他什么时候到达。
I thought of the happy days when I was in Beijing. 我想起了在北京时的那段快乐日子。
I believe the time will soon come when there will be no weapons in the world. 我相信世界上没有武器的日子不久就会到来。
I was walking along the river when I heard a drowning boy cry for help. 我正在河边行走,这时我突然听到一个落水男孩求救。
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