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。Being the sun and not the earthD.17.________ is the centre of our planetary system was a difficult concept to grasp in the Middle Ages. A.D.C.B.16._______ has not been decided next. A.第一空主語(yǔ)從句中缺少主語(yǔ),指代事情,故用what。that。what。第一空處為主語(yǔ)從句,從句缺少主語(yǔ),需用what引導(dǎo);第二空所在句子是個(gè)定語(yǔ)從句,先行詞為整個(gè)主句的內(nèi)容,從句中缺少主語(yǔ),需用which引導(dǎo)。It。That。 【點(diǎn)評(píng)】考查名詞性從句,本題涉及when引導(dǎo)的主語(yǔ)從句。D.whether故答案選D。D.C.B.12.____________ matters most in learning English is enough practice. A.what【答案】 D 【解析】【分析】本題中含有一個(gè)主語(yǔ)從句what made matters worse,其中的what引導(dǎo)起這個(gè)主語(yǔ)從句,同時(shí)在主語(yǔ)從句中做主語(yǔ)。which第一空what作主語(yǔ)從句的主語(yǔ);第二空為表語(yǔ)從句的that。C.it。 thatIf不可以引導(dǎo)主語(yǔ)從句,故選B。BeforeB.9.____ he will offer us enough help doesn39。where【答案】 C 【解析】【分析】考查主語(yǔ)從句。C.3)用連接副詞when, where, why, how引導(dǎo)的名詞性從句(其連接副詞有含義,在句中作狀語(yǔ)。例如:Whether she is ing or not doesn39。故選C。D.has focused。 if when the planes are to take off【答案】 D 【解析】【分析】句意: 飛機(jī)什么時(shí)候起飛已經(jīng)宣布了嗎?此處是when引導(dǎo)的主語(yǔ)從句,且要用陳述句語(yǔ)序,故選D。B.主語(yǔ)從句缺少引導(dǎo)詞,從句缺少主語(yǔ),故選D。 【點(diǎn)評(píng)】考查名詞性從句和定語(yǔ)從句,本題涉及固定句式it is known to us all that…和whom引導(dǎo)的限制性定語(yǔ)從句。D. whoseAs。 ___ surprised me most 是一個(gè)主語(yǔ)從句,從句中缺少主語(yǔ),故填what; ____the girl passed the driver test是一個(gè)表語(yǔ)從句,句中不缺少成分,故填that。What。That。s sweet childhood memories.,主語(yǔ)從句中又有一個(gè)主語(yǔ)從句,且此主語(yǔ)從句中缺少主語(yǔ),所以用what引導(dǎo)。D.what that 【點(diǎn)評(píng)】考查名詞性從句,本題涉及主語(yǔ)從句和同位語(yǔ)從句。D. whichB. thatIt。As。分析句子結(jié)構(gòu)可知,第一空為主語(yǔ)從句,從句中缺少主語(yǔ),所以用what,第二空為同位語(yǔ)從句,從句結(jié)構(gòu)完整,所以用that解釋promise的內(nèi)容,故選B。s sweet childhood memories. A.whichs anxiety is one39。3.___ surprised me most was ____the girl passed the driver test. A. howC. why【答案】 C 【解析】【分析】句意:最讓我吃驚的是那個(gè)女孩通過(guò)了駕駛考試。4.________ is known to us all that the old scientist, for ________ life was hard in the past, still works hard in his eighties. A.It。 whom第一空it is known to us all that…是個(gè)固定句型,意為“眾所周知…”;第二空為介詞+關(guān)系代詞引導(dǎo)的定語(yǔ)從句,先行詞the old scientist指人,作介詞for的賓語(yǔ),只能用whom,故選D。句意:誰(shuí)起著重要作用,這是眾所周知的。D.too much on grades. However, whetherfocused。C.根據(jù)In the past decade,在最近的幾