多用who(指人)、which(指物)、that(即可指人也可以指物)，还有一个经典的容易被忽视的定语从句在大作文中可以表达事件发生的原因：即由why引导的固定句型...the reason(s) why...E.g:There may be some reasons why entertainment starsearn high salaries but overall Iagree that they are overpaid.
文章中提出观点的好句型，无论是你自己的观点还是文章中原来给出的观点都可以。建议多用that引导的，不容易出错，如：some people think/agree/suggest/insistthat...E.g:A growing number of parents believe that being overlydependent on social networkingwebsites only makes their children more isolatedin the real world.
状语的种类特别多，所以状语从句是你最能够表现句型多样化的机会。牢记以下几种状从的分类，句子的丰富性自然就出来了：A.时间状语从句(引导词：when/as/while/since/themoment...)E.g:The related sectors should take effective measuresthe moment the problem appeared.B.地点状语从句(引导词：where/wherever)E.g:Generally，air will be heavilypolluted where there are factories.C.原因状语从句(引导词：because/since/as/seeingthat...)E.g:As this policy would also affect the cost of publictransport, it would be very unpopularwith everyone who needs to travel on theroads.D.条件状语从句(引导词：if/as long as/providingthat/provided that...)E.g:The government will increase its support for publiceducation, provided that such funds canbe put to good use.E.让步状语从句(就是转折关系，引导词：though/although/while/nomatterwho/where/which/how...)E.g:*While (表示二者对比)some people link happinessto wealth and material success, othersthink it lies in emotions and lovingpersonal relationships.*Even though it is unlikely that allworkers do feel happy in their work, I think it is notunrealistic to promotemore job satisfaction in any job.