四六级

　　要写好英语四级作文，不仅要记牢一些精彩的短语和句子，更要在语法上下功夫！文都网校小编特地为大家整理了一些四级作文中常用的英语语法知识。希望能够为各位考生的写作带来帮助！

　　时间状语从句

　　引导时间状语从句的从属连词和词组有：

　　1)when,whenever,while,as,after,before,since,till,until,once等。

　　We have learnt quite a lot about it since we came here.

　　2)as soon as,hardly(scarcely)...when,no sooner...than,each(every) time,the moment,immediately(that)等。

　　As soon as I sent an e-mail message,I received positive responses.

　　The moment he heard the good news,he jumped with joy.

　　地点状语从句

　　引导地点状语从句的连词是where,wherever.

　　Wherever she went,she took her little daughter with her.

　　原因、结果和目的状语从句

　　1)引导原因状语从句的从属连词有：because,as,since,now(that),seeing that,considering that,in that等。

　　Considering that he is a freshman,we must say he is doing well.

　　2)引导结果状语从句的连词有：so...that,such...that,so that,that,so等。

　　Mickey Mouse is so attractive that the children are reluctant to leave.

　　3)引导目的状语从句的连词有：so that,in order that,for fear that,lest等，从句常使用may,might,can,could,would等情态动词。

　　We got up early this morning so that we could catch the first bus to the railway station.

　　条件和让步状语从句

　　1)引导条件状语从句的连词和词组有if,unless,as(so) long as,on condition that,in case,provided(providing) that,supposing等。

　　As long as you have the right equipment,you can use a telephone line to transmit computer data.

　　2)引导让步状语从句的连词和词组有though,although,whether,even though,even if,no matter what(when,how...),whatever(whenever,wherever,however....)等。though,even if等引导状语从句可转换成含有as的部分倒装结构，具有强调意义。其结构为“形容词(副词、动词、名词)+as+主语+谓语”。

　　No matter what you may say,I would not change my mind.

　　Young as he is,he is quite experienced in this work.(=though he is young)

　　Child as he is,he can speak English fluently.(=though he is a child)

　　方式状语从句

　　引导方式状语从句的连词有as,just as,as if,as though等。as if,as though引导的状语从句中，谓语动词常用虚拟语气，表示与事实相反。

　　The young man made the experiment just as the teacher had taught him.

　　Everything went on as usual as if nothing had happened.

　　总之，复习英语四级考试作文一定要多多练习，如果您还想查看更多复习资料，欢迎到文都网校四六级频道进行查阅！