--- What makes you so worried?
---- _______.
A.Because of my weightB.I’ve lost some weight
C.That I’m putting on weightD.Because I’ve put on weight
C

試題分析:考查主語從句。本題中第一句中的what在句中充當(dāng)?shù)氖侵髡Z,故下面回答的這一句也應(yīng)該在句中做主語。AD項(xiàng)不能在句中做主語。B項(xiàng)缺少連接詞。句意:—什么事情讓你如此擔(dān)憂?—我正在發(fā)胖。句中的that引導(dǎo)起主語從句,在句中不充當(dāng)任何成分,只起引導(dǎo)和連接作用。故C正確。
點(diǎn)評(píng):主語從句是在復(fù)合句中充當(dāng)主語的從句,通常放在主句謂語動(dòng)詞之前或由形式主語it代替,而本身放在句子末尾。解答這類題目,關(guān)鍵在于分析清楚句子結(jié)構(gòu)。通過判斷引導(dǎo)詞在從句中所作的成分及意義,來選擇正確的引導(dǎo)詞。連接主語從句的從屬連詞主要有that, if, whether,和疑問詞(what how where when ...)。that引導(dǎo)表示陳述句的主語從句,if和whether,whether...or not引導(dǎo)表示“是否”,引導(dǎo)一般疑問句。連接代詞主要有who,whom,whose,what,whoever,whomever,whosever,whatever,whichever等。連接代詞一般指疑問,但what, whatever除了指疑問外,也可以指陳述。連接副詞主要有when, where, why, how, whenever, wherever, however等.
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