英语说明文写作句式.doc

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1、写作的基本句式（上）1．表示原因1）Therearethreereasonsforthis．2）Thereasonsforthisareasfollows．3）Thereasonforthisisobvious．4)Thereasonforthisisnotfartoseek．5)Thereasonforthisisthat．．．6）Wehavegoodreasontobelievethat．．．例如：Therearethreereasonsforthechangesthathavetakenplaceinourl

2、ife．Firstly，people’slivingstandardhasbeengreatlyimproved．Secondly,mostpeoplearewellpaid，andtheycanaffordwhattheyneedorlike．Lastbutnotleast，moreandmorepeopleprefertoenjoymodernlife．注：如写第一个句子没有把握，可将其改写成两个句子。如：Greatchangeshavetakenplaceinourlife．Therearethreereas

3、onsforthis．这样写可以避免套用中的表达失误.2．表示好处1)Ithasthefollowingadvantages．2）Itdoesusalotofgood．3）Itbenefitsusquitealot．4）Itisbeneficialtous．5）Itisofgreatbenefittous．例如：Booksarelikefriends．Theycanhelpusknowtheworldbetter，andtheycanopenourmindsandwidenourhorizons．Therefore

4、,readingextensivelyisofgreatbenefittous．3．表示坏处1）Ithasmoredisadvantagesthanadvantages．2)Itdoesusmuchharm．3）Itisharmfultous．例如：However，everythingdividesintotwo．Televisioncanalsobeharmfultous．Itcandoharmtoourhealthandmakeuslazyifwespendtoomuchtimewatchingtelevisi

5、on．4．表示重要、必要、困难、方便、可能1）Itisimportant(necessary，difficult，convenient，possible)forsb．todosth．2）Wethinkitnecessarytodosth．3）Itplaysanimportantroleinourlife．例如：Computersarenowbeingusedeverywhere，whetherinthegovernment，inschoolsorinbusiness．Soon，computerswillbefoun

6、dineveryhome,too．WehavegoodreasontosaythatcomputersareplayinganincreasinglyimportantroleinourlifeandwehavesteppedintotheComputerAge．5．表示措施1）Weshouldtakesomeeffectivemeasures．2）Weshouldtryourbesttoovercome（conquer）thedifficulties．3)Weshoulddoourutmostindoingsth

7、．4）Weshouldsolvetheproblemsthatweareconfronted（faced）with．例如：Thehousingproblemthatweareconfrontedwithisbecomingmoreandmoreserious．Therefore，wemusttakesomeeffectivemeasurestosolveit．6．表示变化1)Somechangeshavetakenplaceinthepastfiveyears．2）Agreatchangewillcertainly

8、beproducedintheworld’scommunications．3）Thecomputerhasbroughtaboutmanychangesineducation．例如：Somechangeshavetakenplaceinpeople’sdietinthepastfiveyears．Themajorreasonsforthesechangesa