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,助動(dòng)詞應(yīng)該用do。故選D。20.—This bed is too big for Jack39。 A.B.C.D.這個(gè)床占據(jù)了太多空間。故C選項(xiàng)正確。21.—How do you usually go to school? —I ________ to school on foot. A.wentC.will go【答案】 A 【解析】【分析】句意:——你通常怎么去上學(xué)?——我步行去上學(xué)。 【點(diǎn)評(píng)】考查動(dòng)詞時(shí)態(tài)。s uncle is a good cook. He cookB.cooksD.【答案】 C 【解析】【分析】句意:山姆的叔叔是一名優(yōu)秀的廚師。此題考查一般現(xiàn)在時(shí)的用法。答案為C。How can you do thatWhat should you doC.What do you think of it故C選項(xiàng)正確。24.Lucy, what about going camping if it ________ tomorrow?A.t raindoesn39。C.t rainrains【答案】 B 【解析】【分析】句意:Lucy,如果明天不下雨去野營(yíng)怎么樣?在if引導(dǎo)的條件狀語(yǔ)從句中,用一般現(xiàn)在時(shí)表將來(lái)。【點(diǎn)評(píng)】考查動(dòng)詞時(shí)態(tài),注意主將從現(xiàn)結(jié)構(gòu)。t know when ________ tomorrow. — I will call you as soon as he ________.A. arrivesB. arrivesC. will arriveD. will arrive【答案】 B 【解析】【分析】句意:——我不知道他明天什么時(shí)候來(lái)。第一空為when引導(dǎo)的賓語(yǔ)從句,語(yǔ)序使用陳述句語(yǔ)序,排除A、D兩項(xiàng);as soon as引導(dǎo)的時(shí)間狀語(yǔ)從句使用一般現(xiàn)在時(shí)表將來(lái),排除C項(xiàng),故選B。26.Doing eye exercises ________ one of the useful ways to protect our eyes. A.B.C.D.動(dòng)名詞做主語(yǔ),謂語(yǔ)用三單,故選A。27.If people the traffic rules, there would be fewer traffic jams and accidents. A.B.C.if引導(dǎo)的時(shí)間狀語(yǔ)從句中用一般現(xiàn)在時(shí)表示將來(lái),主句用一般將來(lái)時(shí)。【點(diǎn)評(píng)】考查動(dòng)詞的時(shí)態(tài),牢記主將從現(xiàn)結(jié)構(gòu)。t know when heback.A.es, will eC. will e, es【答案】 C 【解析】【分析】句意:我不知道他什么時(shí)候回來(lái).當(dāng)他回來(lái)時(shí),請(qǐng)告訴我。29.It often _______ here in winter. Look! It39。snows。B. snowingsnow。D. snows【答案】 A 【解析】【分析】句意:這里冬天經(jīng)常下雪。第一句話缺少動(dòng)詞,根據(jù)often和主語(yǔ)it可知?jiǎng)釉~應(yīng)使用第三人稱單數(shù)形式,根據(jù)look可知應(yīng)為正在進(jìn)行的動(dòng)作,故選A。30.Kevin will be healthier than before as long as he ____ less meat and more vegetables. A.B.C.D.as long as引導(dǎo)的條件狀語(yǔ)從句,時(shí)態(tài)是主將從現(xiàn),主語(yǔ)是he第三人稱單數(shù),故謂語(yǔ)動(dòng)詞是單三式 , 故選B。