高考英语-重难增分篇-第三讲-名词性从句.pptx
第三讲名词性从句
第一课时知识过关课;1.主语从句作主语,主句谓语动词通惯用单数;为使句子平衡,惯用it作形式主语。
2.表语从句还能够用asif,asthough引导。
3.表示“是否”,引导宾语从句时可用if或whether,但在介词后或直接与ornot连用时,只能用whether引导;引导表语从句、同位语从句或位于句首主语从句时,只能用whether,不用if。
4.同位语从句普通放在fact,news,idea,promise,suggestion,advice等抽象名词之后,说明或解释这些抽象名词详细内容。多用that引导,不能由which引导。
5.当宾语从句又带有补语时,要用it作形式宾语。;6.在表示“提议”“命令”“要求”,如advice,suggestion,proposal,order,demand,request等词后名词性从句,其谓语通惯用“(should+)动词原形”。
7.that引导名词性从句时,不作任何句子成份;但that引导定语从句时,它代表先行词,而且在从句中作主语、宾语或表语。
Istillrememberthepromisethathemade.
我依然记得他许下诺言。(定语从句)
Thenaughtyboymadeapromisethathewouldnevermakeanoise.
那个调皮男孩确保说他以后再也不喧华了。(同位语从句);8.what可引导名词性从句但不能引导定语从句。what引导名词性从句,有时相当于“the+名词+that”,表示“(所)……”。
What(=Thethingthat)yousaidwasright.
你所说是正确。;读语篇,悟语法。重复朗诵以下短文,领悟画线和黑体部分,思索:画线部分在全句中作何种成份,即是什么从句,该从句为何要由这个黑体词来引导。
WhatworriesmyclassmateMarykalotthesedays[1]isthatsheputsontoomuchweightandsheisfrequentlyill[2].Shehassomedoubtswhethersheeatstoomuchfastfoodhighinfatorsugar[3].Also,withthecollegeentranceexaminationapproaching,shebecomesmorestressfulandshecouldn’tsleepwellthesedays.Maybethisisalsothecausethatshebecomesfatterthesedays[4],shethinks.Howshebecomesslimmerandhealthier[5]hasbeenhermaintask.Soshewantstoconsultsomeexpertsandgainsomeinstructions.Butwhereshecouldgetbettersuggestionsandwhowillgiveherbetteradvice[6]alsopuzzleher.Itisher;parents’suggestionthatsheshouldconsultProfessorWanginZhongshanHospital[7].ProfessorWangsuggeststhatshekeepabalanceddietfirst[8].Sheshouldeatvegetablesandfruithighinfiber,vitaminandprotein.What’smore,ifshewantstoloseweight,shehadbettertakeregularexercisemorethanhalfanhouraday.MaryaskedProfessorWangwhensheshouldtakeexercise[9].ProfessorWangadvisedhertotakeexerciseat5o’clockintheafternoonbecauseshewillhavemoretimetodosports.ThankstoProfessorWang,Maryhasbecomemuchhealthierno