一、两句首尾套话——书信标志1.开头句：I’mwritingto（askabout…）这句话开门见山表明写这封信的目的。例如toaskabout用于询问信息；togivesomeadvice用于提出建议；toexpressmyhumbleopinions用于提出自己的看法。2.结尾句：I’mlookingforwardtoyourreply.这句话用于结尾处，表示期待对方的回复。注意to是一个介词。所以后面只能接名词或动名词。比如I’mlookingforwardtoseeingyousoon（我期待早日见到您）。二、三种间接提问——委婉客气1.接名词：Iwouldliketoknowabout…Iwouldliketolearnsomeinformationaboutthetimeand…2.接句子：Ialsowanttolearnwhat/how/where/when…Ialsowanttolearnwhatactivitiestherewillbe.（注意用陈述语序）3.接动词：IwonderifIcould…（“是否能…”）IwonderifIcouldtalkwithforeignteachersinEnglish三、四类常见错误——通用规则1.动词做主语，变成动名词【误】Haveahealthydietisalsoimportant.【正】Havingahealthydietisalsoimportant.2.主谓要完整【误】Youwillhappy.【正】Youwillbe/feelhappy.3.两句之间有连词【误】Youshouldtakemoreexercise,youcaneatmorevegetables.【正】Youshouldtakemoreexercise,andyoucaneatmorevegetables.【误】You’dbetternoteattoomuchfriedfood,itisbadforyourhealth.【正】You’dbetternoteattoomuchfriedfood,becauseitisbadforyourhealth.4.上下时态呼应【误】Wewilldrivetothehotelfirstandthenhadapicnicinthegarden.【正】Wewilldrivetothehotelfirstandthenhaveapicnicinthegarden.四、五种变换方法——避免单一句式如何防止通篇一种开头的句式？例如：提建议全都是“Youshould…”，方法有很多，例如：I’dlikeyouto…；Itisimportantforyouto…；Doing…ishelpful.；Whynot…?概括起来，有至少五种方式：1.说“事”不说“人”Ilikeplayingbasketball.——Basketballismyfavoritesport.2.套用It和Therebe句型Wewillhaveapicnicinthegardennextweekend.——Therewillbeapicnicinthegardennextweekend.Youshouldalsokeepourairclean.——Itisalsoimportanttokeepourairclean.3.用不同动词，主宾换位Iusuallyspendhalfanhourridingtoschool.——Itusuallytakesmehalfanhourtoridetoschool.4.恰当使用被动句Wemustprotectouroceansandsoil.——Ouroceansandsoilmustbeprotected.5.使用非谓语动词（分词或不定式）Youshouldwritedownthewordsonapieceofpaper,becauseitishelpful.——Writingdownthewordsonapieceofpaperishelpful.或Itishelpfultowritedownthewordsonapieceofpaper.