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when while as引导时间状语从句的区别

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e went on,the weather got worse.(as表示“随着……”之意) ? As years go by,China is getting stronger and richer.? 随着时间一年一年过去,中国变得越来越富强了。Р4.在将来时从句中,常用when,且从句须用一般时代替将来时。? ?①When the es here for a visit next week,I’ll talk with him about this.?下周,经理来这参观时,我会和他谈谈此事。РI was watching TV the telephone rang.?I was about to go out my parents came to see me.?They had already put the fire out I returned to the village.РwhenРwhenРwhenР5. be doing when…正在做某事突然…? be about to do when…正要做某事这时…? had (just/already) done when+过去时…已经完成某事这时…Р6. when用于表示“一……就……”的句型中(指过去的事情)。? sb had hardly/scarcely done sth when…?=Hardly/Scarcely had sb done sth when…?(否定词放句首,句子要半倒装)?我刚一闭上眼,就有人在敲门了。?I had hardly/scarcely closed my eyes when someone knocked at the door.?=Hardly/Scarcely had I closed my eyes when someone knocked at the door.

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