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to try22.He ________ to get to the top of the hill after ________ several times. A.難點(diǎn)在于理解題意,并掌握不定式的這種用法。根據(jù)句意可知,這個短語表示的是超市這樣做的目的,故應(yīng)選A。Protected【答案】 A 【解析】【分析】句意:為了保護(hù)環(huán)境,中國的很多超市停止免費(fèi)提供塑料袋。C.Protect21.________ the environment, many supermarkets in China stopped providing free plastic bags. A.根據(jù)need to do,可知排除A,根據(jù)問句 What skill do I need,可知用need to回答,故選C。 need to【答案】 C 【解析】【分析】句意:——擁有這份工作我需要有什么技能?——你需要擅長電腦。C. canB. need20.—What skill do I need ________ the job? —You ________ be good at puter. A.keep… from阻止; take action采取行動;空格后的非謂語動詞部分是表示采取行動的目的,所以應(yīng)該用動詞不定式,故選C。D.to keepB.keep動詞不定式作目的狀語是其基本用法之一。句中We should do something we can,后省略do,后面接不定式作目的狀語,故選B。C.to makeour school beautiful. A.18.As students, we should do something we can 做更多的運(yùn)動的目的是為了保持健康,因此用不定式做目的狀語,表目的,為了,故選C。C.Keeping healthy, you should take more exercise.A.17.—What should I do, doctor? —故選:B。clean動詞,打掃;need to do需要做某事,主動含義;need doing需要被做,含有被動含義。cleaned【答案】 B 【解析】【分析】句意:—我認(rèn)為教室需要被打掃。C.cleaning16.—I think the classroom needs _______.—Well, you are right.A. 【點(diǎn)評】考查動詞的形式。to learn【答案】 C 【解析】【分析】句意:Michael為了了解中國文化瀏覽了很多網(wǎng)站。learnedlearn注意固定短語allow sb. to do sth。allow sb. to do ,固定短語,故選A。D.visitB.to visit14.To my surprise, Daniel39。 【點(diǎn)評】考查動詞不定式。to not swim【答案】 C 【解析】【分析】句意:——你愿意和我一起去游泳嗎,湯姆?——對不起,但是我們的老師總是告訴我們不要在河里游泳。not to swimnot swimmingt swimin the river.A.13.— Would you like to go swimming with me, Tom? — Sorry, but our teachers always tell us 介意;在乎后面只能跟動名詞作賓語,故答案選B。turn【答案】 B 【解析】【分析】句意:你介意把音樂的音量調(diào)小一些嗎?太吵了。B.to turn12.Would you mind ____________down the music? It39。)本句動詞用不定式:to learn。表達(dá)“做某事……”就是動詞短語作主語,動詞短語作主語時,常用it作為形式主語放在句首,而將真正的主語用帶to的不定式跟在