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1、AdverbialClauseofReason原因狀語(yǔ)從句原因狀語(yǔ)從句的引導(dǎo)(從屬連詞)Because通常表示直接的原因,可以用just,only,simply等強(qiáng)調(diào)或用not否定從句通常置于句首,也可以置于句尾Theboywasabsentonlybecausehewasill.Because回答why提出的問(wèn)題或在分裂句中表強(qiáng)調(diào)時(shí),只能用because引導(dǎo)的從句表示補(bǔ)充說(shuō)明或推斷的原因的從句必須置于句尾,用逗號(hào)隔開(kāi)Hemustbein,becausethelightison.For表示補(bǔ)充說(shuō)明或推斷的原因,從句必須后置,用于正式文體,用標(biāo)點(diǎn)符號(hào)
2、和主句分開(kāi)He'sdrunk,for/becauseIsawhimstaggering.(有時(shí)for可以用于句首,引導(dǎo)句子補(bǔ)充說(shuō)明上文)Since(andAs)表示明顯的、已知的原因,從句通常置于句首,也可以位于句尾Sinceyouinsist,Iwillconsiderthisproblem.(不能用just,only,simply等強(qiáng)調(diào),也不能用not否定)That用于表示情感或者心境的形容詞或動(dòng)詞后,表示原因I'msohappythatyoupassedyourexam.Oldthat/ashewas,hedidnothearverywell
3、.原因狀語(yǔ)從句的轉(zhuǎn)換-ing分詞及其短語(yǔ)不定式及其短語(yǔ)-en分詞及其短語(yǔ)形容詞短語(yǔ)和名詞短語(yǔ)介詞短語(yǔ)填空題(because,since,for,that)___therainhasstopped,let’sgoforawalk.SinceThestarslooksmallonly___theyarefaraway.because填空題(because,since,for,that)Idecidedtohavelunch--__Iwasfeelingquitehungry.forIrejoice(高興)___youarecominghome.that
4、將下列狀語(yǔ)從句轉(zhuǎn)換成短語(yǔ)AsMarkwaspoor,hecouldnotgotoschool.BeingpoorAsMarkwaspoorinhealth,hecouldnotwork.PoorinhealthIstayathomebecauseitwasraining.becauseoftherainIwasreallyfoolishbecauseIexpectedhimtohelpme.toexpecthimtohelpme