人教课标高二选修6Unit31.Itisnevertoooldtolearn.活到老,学到老。2.Itrainscatsanddogs.大雨滂沱3.Itneverrainsbutitpours.不鸣则已,一鸣惊人。4.Itisapoormousethathasonlyonehole.1.Itisnevertoooldtolearn.2.Itrainscatsanddogs.3.Itneverrainsbutitpours.4.Itisapoormousethathasonlyonehole.1.ItisamazingthatatmyageIamstillfit.2.Itiseasiertofallthantorise.3.Itisnogoodcryingoverspiltmilk.4.Ithinkitbestthatyoushoulddomoreexercise.5.Hefounditdifficulttoaccustomhimselftogettingupearly.Thesubjectposition1.ItisamazingthatatmyageIamstillfit.2.Itiseasiertofallthantorise.3.Itisnogoodcryingoverspiltmilk.“It”canbeusedinthesubjectpositiontostandfor_______,___________or_________.aclauseaninfinitive-ingformTheobjectposition4.Ithinkitbestthatyoushoulddomoreexercise.5.Hefounditdifficulttoaccustomhimselftogettingupearly.aclauseaninfinitive1.ItisamazingthatatmyageIamstillfit.2.Itiseasiertofallthantorise.3.Itisnogoodcryingoverspiltmilk.4.Ithinkitbestthatyoushoulddomoreexercise.5.Hefounditdifficulttoaccustomhimselftogettingupearly.“It”canbeusedinthesubjectorobjectpositiontostandfor________,___________or_________.aclauseaninfinitive-ingform1.It’sdifficulttogiveupsmoking.2.Isitcertainthattheywillwin?3.Itisgoodlearningwithoutpractice.4.Itisfunforhimtostudy.5.It’sapitythatourteachercan’ttakepartinourparty.6.Itissuggestedthatwe(should)arrivetherein2hours.formalsubject1.It+is+adj./n./p.p.+infinite/clause/-ingformrealsubjectclear,easy,true,difficult,certain,etc.fun,apity,ashame,nouse/good,etc.said,believed,decided,hoped,etc.1.It’sdifficulttogiveupsmoking.2.Itisfunforhimtostudy.3.Itissuggestedthatwe(should)arrivetherein2hours.遵循英语语言的尾重原则,避免句子头重脚轻。formalobject2.…+verb+it+adj./n.+infinite/clause/-ingformrealobjectfind,think,feel,believe,consider,make,etc.2.Someyoungpeoplethinktheylookattractivewhentheysmoke.Itseems__________________________________________________________1.Givingupsmokingisdifficulttodo.Itis__________________________thatsomeyoungpeoplethinktheylookattractivewhenth...