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1、PredicativeClauses表語從句表語從句的定義：表語從句在復(fù)合句中作主句的表語。表語從句和主語指同一內(nèi)容，它對主語進(jìn)行解釋、說明，使主語的內(nèi)容具體化。結(jié)構(gòu)是“主語+系動(dòng)詞+表語從句”?？梢越颖碚Z從句的系動(dòng)詞有be,look,remain,seem等。連接詞：連接代詞：連接副詞：that/whether/asif/asthoughwho/whom/whose/which/whatwhen/where/why/how/because1.Thequestionis__________wecanrelyonhim.2.That’s____________wewe
2、reinneedofmoneyatthattime.3.Helooked_________hewasgoingtocry.4.That’s________Iwaslate.whetherbecauseasifwhy引導(dǎo)詞的用法（一）that在表語從句中,又。Thefactisthathehasn’tyetrecoverfromillness.Thereasonwhyhehastogoisthathismotherisillinbed.既不充當(dāng)成分沒有意義whether在表語從句中表,但不充當(dāng)句子的成分。if引導(dǎo)表語從句.如:1.Whatthedoctorreally
3、doubtsiswhethermymotherwillrecoverfromtheseriousdiseasesoon.2.Thequestioniswhetheritisworthdoing.“是否”不能引導(dǎo)詞的用法（二）what在表語從句中充當(dāng)______________表示____________________________.1.Thequestioniswhatcausedtheaccident.2.Thatmountainisnolongerwhatitusedtobe.3.Whathetoldyouwaswhathadbeendiscussedatt
4、hemeeting.主語、賓語或表語什么，什么樣子，或所…的（人或事）引導(dǎo)詞的用法（三）who在表語從句中充當(dāng)______________表示____.Theproblemiswhocoulddothework2.Mytroubleiswho(whom)Icanturnto.主語、賓語或表語誰引導(dǎo)詞的用法（四）which在引導(dǎo)表語從句時(shí),常充當(dāng)_____________表示。如：Ireadaboutitinsomebookoranother,butwhatIdon’tknowiswhich(book)itis.定語,表語其中哪一個(gè)引導(dǎo)詞的用法（五）由asif,ast
5、hough引導(dǎo)表語從句，表示好像。句子中的系動(dòng)詞常用look,appear,seem等。Itlooksasifitwasgoingtorain.2.Theyoungmanwithlonghairlooksasifhewereagirl.引導(dǎo)詞的用法（六）當(dāng)主句的主語為reason,或者是由why引導(dǎo)的從句時(shí),與它們相關(guān)的表語從句用_________,而不能由_______引導(dǎo);because引導(dǎo)表語從句時(shí)只能用于________________________句型中.1.ThereasonwhyIwaslatewasthatImissedthetrain.2.Iwa
6、slate.It/That/ThiswasbecauseImissedthetrain.that來引導(dǎo)becauseIt/That/Thisis/wasbecause…引導(dǎo)詞的用法（七）當(dāng)表語從句中主語、賓語、表語具備，但是還是要表示疑問含義，可以判斷句子中缺少狀語，常常用相應(yīng)的特殊疑問詞引導(dǎo)，有why,when,where,how等Thisis_________hedidit.Thatis_______thebrotherswantedtomakeabet.That’s_______we’vegivenyoutheletter.引導(dǎo)詞的用法（八）howwhywhy
7、表語從句引導(dǎo)詞注意事項(xiàng)1.that引導(dǎo)表語從句時(shí)不能省.2.if不能引導(dǎo)表語從句.3.除that外的所有引導(dǎo)詞都有自己的意義。4.除that,whether外的所有引導(dǎo)詞都須在從句中充當(dāng)相應(yīng)的成分5.主語為advice、suggestion、order、command、reguest等時(shí)，表語從句為虛擬語氣Thesuggestionhegavemewasthateverymeans________________tosavethecropsbeforethestormcame.(try)他給的建議是，要在暴風(fēng)雨來臨之前嘗試每一種方法來拯救這些莊稼。WhatIwa
