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語,關(guān)系副詞when引導(dǎo)的從句作真正的主語。D.that are the planes to take offC.5.Has it been announced ______? A.句意:誰起著重要作用,這是眾所周知的。D.C.B.4._______ are playing an important part is well known to us all.A. as【答案】 C 【解析】【分析】這題考查從句的用法,第一空填what引導(dǎo)主語從句,在主語從句中what做主語,第二空填that引導(dǎo)表語從句,在表語從句中,as是引導(dǎo)時間狀語從句,句意是:甚至更重要的是:隨著地球的冷卻,水開始出現(xiàn)在表面。lt。 asWhat。 asWhat。 whenWhen。is even more important is 【點評】考查名詞性從句和定語從句,本題涉及固定句式it is known to us all that…和whom引導(dǎo)的限制性定語從句。 whom【答案】 D 【解析】【分析】句意:我們都知道,那位老科學(xué)家,過去生活很艱苦,到了八十多歲還在努力工作。D.As。 whoseB.As。 【點評】考查名詞性從句,本題涉及主語從句和同位語從句。 which【答案】 B 【解析】【分析】句意:我們都知道,Johnson違背了他會盡快來幫助我的諾言。D. whichC. thatB. that英語名詞性從句專題訓(xùn)練答案含解析一、初中英語名詞性從句1._______is known to us all is that Johnson broke his promise ______ he would e to help me as soon as possible. A.It。What。As。What。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。2.________ is known to us all that the old scientist, for ________ life was hard in the past, still works hard in his eighties. A. whoseIt。C. whomIt。第一空it is known to us all that…是個固定句型,意為“眾所周知…”;第二空為介詞+關(guān)系代詞引導(dǎo)的定語從句,先行詞the old scientist指人,作介詞for的賓語,只能用whom,故選D。3.the earth cooled down, water began to appear on its surface.A. that。B. whether。C. that。D. whether。選C。That whoThose whoWho thatWho【答案】 D 【解析】【分析】考查主語從句。主語從句缺少引導(dǎo)詞,從句缺少主語,故選D。when are the planes to take offB.where are the planes to take offwhen the planes are to take off【答案】 D 【解析】【分析】句意: 飛機什么時候起飛已經(jīng)宣布了嗎?此處是when引導(dǎo)的主語從句,且要用陳述句語序,故選D。6.Located between the 16th and the 18th floor, ______ I call my “home” is more like a “bird39。whichB.whatD.What引導(dǎo)主語從句______ I call my “home”且故選C。t matter a lot to our success. A.WhetherC.How【答案】 B 【解析】【分析】句意:他是否提供幫助對于我們的成功沒有什么關(guān)系。【點評】考查名詞性從句,本題涉及whether引導(dǎo)的主語從句的應(yīng)用。what。B. th