人教版高一英語必修4學(xué)案之 句型剖析 ：Unit2　Working the land.doc

二、句型剖析1.for作連接詞【典型例句】 i went to see him,for i had something to tell him.我去見他,因?yàn)槲矣惺乱嬖V他?！疽c(diǎn)歸納】 for為并列連詞,它引導(dǎo)的表原因的并列分句一般放在所要說明的分句的后面,用來附帶解釋說明其原因或理由?！鞠嚓P(guān)鏈接】 for與because/since/as辨析:(1)because 是從屬連詞,接表示直接原因的從句,一般放在主句的后面,也可放在主句前面,它表示的語氣最強(qiáng),在回答why的問句時(shí),必須用because。例如:the swimming pool wont be open today because theyre making repairs.游泳池今天不開放,因?yàn)樗麄冊谛蘩怼?(2)as 是從屬連詞,說明一般的因果關(guān)系,語氣比because 弱,說明比較明顯的原因,它引導(dǎo)的從句通常放在句首,有時(shí)也可放在句末。例如:as/since it is raining,youd better take a taxi.天下雨了,你最好乘出租車。 (3)since 意為“既然”,表示對方已知的無需加以說明的原因或事實(shí),語氣比because弱,但是比as 強(qiáng)。例如:since everybody is here,lets begin our party.既然大家都到了,那就開始我們的聚會吧！2.倍數(shù)+as+形容詞原級+as【典型例句】 this tree is three times as tall as that one.這棵樹是那棵樹的三倍高。 his father is twice as old as he.他父親的年紀(jì)有他兩倍大?！鞠嚓P(guān)鏈接】 (1)倍數(shù)+計(jì)量形容詞比較級+than,例如:the yangtze river is almost twice longer than the pearl river.長江差不多比珠江長兩倍。 the dictionary is exactly five times more expensive than that one.這本字典比那本恰好貴5倍。(2)倍數(shù)+the+計(jì)量名詞+of,例如:the newly broadened square is four times the size of the previous one.擴(kuò)建的廣場是未擴(kuò)建時(shí)的四倍大。(3)倍數(shù)+that+of.例如:the size of the newly broadened square is four times that of the previous one.擴(kuò)建的廣場為以前的四倍大。(4)倍數(shù)+the+計(jì)量名詞,例如:ive paid five times the usual price for the stamp.我出了5倍于往常的價(jià)格買這枚郵票。3.would rather 【典型例句】 i would rather have a cup of coffee than a cup of water.我寧愿喝杯水也不愿喝杯咖啡。i would rather not go by car.我寧愿不乘汽車去。i would rather not have attended the physical exam.我寧愿沒有參加這次體檢。i would rather you posted the e-mail now.我倒是希望你現(xiàn)在就把這封電子郵件寄走。 i would rather you had been there yesterday.我真希望昨天你能在那里?！疽c(diǎn)歸納】 (1)would rather do than do.或would do rather than do表示“寧愿而不愿”。表示主語本身與過去的事實(shí)相反的愿望時(shí),后接現(xiàn)在完成時(shí)。(2)would rather (that)從句用虛擬語氣,敘述過去的情況,從句動詞用had done；敘述現(xiàn)在和將來的情況,用過去式。4.“疑問詞+ever”和“no matter+疑問詞”【典型例句】 no matter where you are,i will miss you.(=wherever you are,ill miss you.) 不論你到哪兒,我都會想你的。dont trust him,no matter what he says.(=dont trust him whatever he says.)不管他說什么,都別相信他。whatever you say are always true.(不能換成no matter what)無論你說什么都是對的。【要點(diǎn)歸納】“疑問詞+ever”和“no matter+疑問詞”都引導(dǎo)讓步狀語從句。此外,“疑問詞+ever”還可引導(dǎo)名詞性從句?！鞠嚓P(guān)鏈接】(1)who和whoever的區(qū)別:who引導(dǎo)名詞性從句時(shí),意為“誰”,有疑問語氣；whoever相當(dāng)于anyone who.,意為“無論是誰,的任何一個(gè)人”。例如:who has taken away my bag is unknown.誰拿走了我的包還不知道。(用whoever句意不通) whoever wants to see this film can go with us tonight.無論誰想看這部電影今晚可以和我們一起去。(whoever wants 相當(dāng)于anybody who wants,意為“凡是想的人”。這里不可換為who。) (2)what和whatever的區(qū)別:what=the thing which;