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as的用法归纳(全)as用法归纳一、作副词大家学习辛苦了,还是要坚持⒈IreadtheletterasIwalkedalongtheriver.⒉AsIgetolderIgetmoreoptimistic.⒊JohnwashavinghisdinnerwhenIsawhim.⒋Shecanwriteonlywhenthebabyisasleep.⒌Wemuststrikewhiletheironishot.⒍Whilewewerereading,theteachercamein.Asshehasbeenillperhapssheneedsomehelp.Istayedathomebecauseitrained.Sinceeveryoneishere,let’sstart.Itmusthaverainedlastnight,forthegroundiswet.as引导原因状语从句.as引导让步状语从句4.as引导方式状语从句5.引导比较状语从句6.引导条件状语从句三、用作关系代词注意:such…as与such…that,so…as与so…that的区别:that是连词,引出结果状语从句,在从句中不做成分;as是关系代词,引出定语从句,在从句中可作主语、宾语和表语。比较:Heissuchaniceboythateveryonelikeshim.Heissuchaniceboyaseveryonelikes.这个男孩的性格如此之好,人们都喜欢他。Itissodifficultaproblemthatnobodycanworkitout.Itissodifficultaproblemasnobodycanworkout.这个问题太难了,没有人能解决。四、作介词,As和like都可以做介词,但词义是不同的,As作为,以…资格,Like像….与…相似五、用于一些固定搭配