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st be ill, for he is absent today. 3) as和for的區(qū)別:通常情況下,as引導(dǎo)的從句在主句前,for引導(dǎo)的從句在主句后?! ?because 從句與 because of短語的轉(zhuǎn)換 Because引導(dǎo)的原因狀語從句有時可與because of 短語轉(zhuǎn)換,because of后加的原因可以為好或壞 ,但最正規(guī)的還是because。 I said nothing about it because his wife was there. / I said nothing about it because of his wife’s being there. 因為他妻子在那兒,我對此事只字未提。 對于原因狀語從句的考查,多以單選和完形填空的形式,從連詞的意義角度讓大家選擇連詞。 A. and B. for C. but D. or 解析: “his eyesight was beginning to fail”是“he found it increasingly difficult to read”的原因, 因此本題應(yīng)選用可以表示原因的連詞for引導(dǎo)原因狀語從句。Because引導(dǎo)的原因狀語從句有時可與because of 短語轉(zhuǎn)換,because of后跟的是短語 ,because后跟的是句子。t go to work the heavy rain. A .because of ”,后跟名詞、代詞或短語。 表示目的狀語的從句可以由 that(以便),so that(以便), in order that(為了。唯恐), for fear that(生怕。目的狀語從句的謂語常含有may, might, can, could, should, would等情態(tài)動詞。例如: I got up early so that I could catch the first bus. 我起得很早,目的是為了趕上頭班公共汽車。例如: We39?! n order that與in order to的區(qū)別: in order that+從句 in order to+動詞原形( in order to后面加的那個不叫目的狀語從句,叫目的狀語) 例如: He got up early in order to take the first bus. = He got up early in order that he could take the first bus.(他起床很早是為了趕上第一班公共汽車) 目的狀語從句的一個特點:由于目的都是未來的行為,所以從句中一般用表示未來可能性時態(tài),比如上面句中的could?! o that既可引導(dǎo)目的狀語從句,也可以引導(dǎo)結(jié)果狀語從句。如:He got up late so that he was late for school. = He got up so late that he was late for school. 2)其引導(dǎo)目的狀語從句時,從句只能放在主句之后,此時可以和in order that換用?! 〉湫屠}:Ann listened carefully _____ she could discover what she needed. A. such that B. in order that C. because D. even though 解析:題干的意思是“為了能夠發(fā)現(xiàn)自己需要的東西,安認真聽講”。such that本身是錯誤短語,because 表示原因,even though是“盡管”的意思,不符合題意。目的狀語從句的so that是連著的,結(jié)果狀語從句是分開的,即so…that. so that是目的狀語從句,是為了什么什么,有目的的含義。仔細體會一下吧! 典型例題:I get up