5、从属连词可以引导时间状语从句,让步状语从句,条件状语从句。(1)引导时间状语We must strike while the iron is hot.趁热打铁。(2)引起让步状语从句,意思是"虽然...但是...."、"尽管...但是..."(多放于句首)While he loves his students,he is very strict with them..虽然他爱他的学生,可是他对他们很严格。(3)引起条件状语,意思是"只要"While there is life there is hope.只要生命存在,就有希望。While作并列连词用,意思为"而,然而",
6、表对比。而but表转折。Honey is sweet,but the bee stings.蜂蜜很甜,但蜜蜂有刺蜇人。三、which可以做疑问代词和关系代词。1.用作疑问代词时,意思是"哪一个,哪一些"Whichismyseat?哪个座位是我的?2.用做关系代词时,意思是"那一个,那一些"Healsohadagunwithwhichtodefendhimself.他还有一把自卫用的枪。四、where可以做副词,连词,和代词。当副词时,可分为疑问代词和关系代词:1.(用作疑问副词)在哪里往哪里从哪里在哪一点上ThedriveraskedmewhereIwantedtogo.