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,且what在從句中作主語,故選C。D.C.B.18.He took a trip to Beijing last week and ________ he saw at the Forbidden City impressed him deeply. A.分析句子結(jié)構(gòu)可知,第一空為主語從句,從句中缺少主語,所以用what,第二空為同位語從句,從句結(jié)構(gòu)完整,所以用that解釋promise的內(nèi)容,故選B。What。As。What。It。 【點(diǎn)評(píng)】考查it做形式賓語,熟練掌握固定句式:主+find+it+adj+to do。that was【答案】 C 【解析】【分析】句意:我發(fā)現(xiàn)在家網(wǎng)購和方便。itthats16.I found _______ convenient to shop on line at home. A. 【點(diǎn)評(píng)】考查名詞性從句,本題涉及 what引導(dǎo)的主語從句和that引導(dǎo)的表語從句的應(yīng)用。分析句子可知,主語從句中的謂語動(dòng)詞makes 缺少主語,主語從句中缺少賓語一般用what,因此選擇 what 來引導(dǎo)主語從句;系動(dòng)詞 is 后面的表語從句句意完整,不缺少成分,因此選擇 that 引導(dǎo)表語從句。That。 thatC.That。 what15._______ makes me feel worried is _______ singing stars are centered on by masses of teenagers today. A.故選B。 that【答案】 B 【解析】【分析】句意:眾所周知,中國已經(jīng)發(fā)射了神州7號(hào)宇宙飛船,這是中國首次成功的太空行走。D. whichC. whichB. whats first spacewalk successful. A.主語從句屬于名詞性從句的一種,填哪個(gè)連接詞要分析從句缺少什么成分,然后確定所選的詞。故答案選D。A. why為什么;B. that引導(dǎo)名詞性從句只起引導(dǎo)詞作用,不充當(dāng)成分;C. which哪一個(gè);D. What什么。D.C.B.13.____________ matters most in learning English is enough practice. A.故選D。what【答案】 D 【解析】【分析】句意:他們在森林里迷路了,情況更糟糕的是天又黑了。thatwhichit【點(diǎn)評(píng)】考查it的用法,以及主語從句的應(yīng)用。that引導(dǎo)的是主語從句,故空格處應(yīng)該用it作形式主語,代替真正的that引導(dǎo)的主語從句。D.C.B.11.______ is our belief that improvements in health care will lead to a stronger, more prosperous economy. A.此處是主語從句做主語,從句沒有引導(dǎo)詞,缺少賓語,故答案為B。D.C.B.10.________ we may find interesting is that it usually takes more to be polite. A.根據(jù)句意可知,句子主語是一個(gè)主語從句,引導(dǎo)詞即起引導(dǎo)作用又要做從句的一個(gè)成分,所以第一空填What;第二空是that引導(dǎo)的表語從句,只起引導(dǎo)作用,故選B。D.C.B.9.______ amazed the NBA world is ______ Kobe Bryant scored 81 points just in one game. A.you don39。D.ThatB.t like him is none of my business.A.故D正確。AC兩項(xiàng)不能引導(dǎo)主語從句,which在引導(dǎo)名詞性從句的時(shí)候總是含有疑問的語義,而本句中并沒有疑問的語義。D.C.B.7.They lost their way in the forest, and ___ made matters worse was that night began to fall.A.If不可以引導(dǎo)主語從句,故選B。D.BeforeB.If6.____ he will offer us enough help doesn39。A中的what是句子的主語,但是because引導(dǎo)的從句不作主語,是原因狀語從句,故排除;B的第一空