1.表示原因
　　1) Therearethreereasonsforthis.
　　2) Thereasonsforthisareasfollows.
　　3) Thereasonforthisisobvious.
　　4) Thereasonforthisisnotfartoseek.
　　5) Thereasonforthisisthat.
　　6) Wehavegoodreasontobelievethat.
　　例如：
　　Therearethreereasonsforthechangesthathavetakenplaceinourlife. First，people’slivingstandardhasbeengreatlyimproved. Secondly，mostpeoplearewellpaid，andtheycanaffordwhattheyneedorlike. Lastbutnotleast，moreandmorepeopleprefertoenjoymodernlife.
　　注：如考生写第一个句子没有把握，可将其改写成两个句子。如：Greatchangeshavetakenplaceinourlife. Therearethreereasonsforthis.这样写可以避免套用中的表达失误。新四六级备考专题：包含报考信息、四六级新题型介绍、四级满分牛人经验谈等
　　2.表示好处
　　1) Ithasthefollowingadvantages.
　　2) Itdoesusalotofgood.
　　3) Itbenefitsusquitealot.
　　4) Itisbeneficialtous.
　　5) Itisofgreatbenefittous.
　　例如：
　　Booksarelikefriends. Theycanhelpusknowtheworldbetter，andtheycanopenourmindsandwidenourhorizons. Therefore，readingextensivelyisofgreatbenefittous.
　　3.表示坏处
　　1) Ithasmoredisadvantagesthanadvantages.
　　2) Itdoesusmuchharm.
　　3) Itisharmfultous.
　　例如：
　　However，everythingdividesintotwo. Televisioncanalsobeharmfultous. Itcandoharmtoourhealthandmakeuslazyifwespendtoomuchtimewatchingtelevision.