高一英語課下作業(yè)北師大版必修1Unit 2 HeroesSection 語法講座 專題練習(xí).完成句子1I (從未聽說過) it before.答案：have never heard of2 (你擠牛奶了嗎)? Yes. I have done that already.答案：Have you milked the cow3Oh dear! I (沒見到你) for several years.答案：havent seen you4What (發(fā)生) to Zhouqu in the last month?答案：has happened5Ill help you when I (完成) my paper.答案：have finished6If it (雪停了), Ill go to the park.答案：has stopped snowing7He (買這本書) for a week.答案：has had the book8It is the second time that I (犯這種錯誤)答案：have made the mistake9Its a week since he (生病)答案：fell ill10John (工作) for 10 years.答案：Has worked/has been working.單項填空1When I was at college, I _ three foreign languages, but I _ all except a few words of each.Aspoke; had forgottenBspoke; have forgottenChad spoken; had forgottenDhad spoken; have forgotten解析：句意：我在大學(xué)里會說三種外語，但是現(xiàn)在只記得每種外語中的幾個單詞了。上大學(xué)時是過去的一段時間，所以第一空用過去時spoke；而忘記這一動作發(fā)生在到目前為止的時間段內(nèi)，故用現(xiàn)在完成時。答案：B2 Where is the key to the meeting room? Dear me! I _ it in the taxi!Ahave left BleaveChad left Dleaving解析：根據(jù)語境可知，鑰匙不在答話者手中，而是忘在出租車上了，因此用現(xiàn)在完成時表示過去發(fā)生的動作對現(xiàn)在的影響門打不開了。答案：A3According to the report, the number of people out of work _ by 10% in the past two years.Awas increased Bwere increasedChave increased Dhas increased解析：“the number of復(fù)數(shù)名詞”作主語時，謂語動詞用單數(shù)形式；又“in the past一段時間”與現(xiàn)在完成時連用，故選D項。答案：D4We _ each other ever since we graduated from high school in the 1990s.Adidnt see Bwouldnt seeChavent seen Dhadnt seen解析：句意：我們自從90年代高中畢業(yè)后就再也沒見過對方。ever since引導(dǎo)的時間狀語從句常與現(xiàn)在完成時連用。答案：C5 How are you today? Oh, I _ as ill as I do now for a very long time.Adidnt feel Bwasnt feelingCdont feel Dhavent felt解析：答語句意：哦，很長一段時間以來我沒有像現(xiàn)在這樣難受了。for a very long time是重要的判斷依據(jù)。答案：D6 How long have you known Christopher? Since he _ to our company.Acame Bhas comeCwas coming Dcomes解析：since意為“自從”，引導(dǎo)時間狀語從句，從句中常用一般過去時，主句中用現(xiàn)在完成時。答案：A7 When shall we restart our business? Not until we _ our plan.Awill finish Bare finishingCare to finish Dhave finished解析：在時間狀語從句中，如果表示將來發(fā)生的動作時，常用一般時態(tài)代替，但在表示完成的動作時，可以用完成時態(tài)。故選D項。答案：D8For many years, people _ electric cars. However, making them has been more difficult than predicted.Ahad dreamed of Bhave dreamed ofCdreamed of Ddream of解析：由時間狀語“for時間段” 可知，應(yīng)用現(xiàn)在完成時。答案：B9Progress _ so far very good and we are sure that the work will be finished on time.Awas Bhad beenChas been Dwill be解析：句意：到目前為止，進(jìn)展很順利，我們相信工作會按時完成。so far表示“到目前為止”，常與現(xiàn)在完成時連用。答案：C10This is the first time we _ a film in the cinema together as a family.Asee Bhad seenCsaw Dhave seen解析：在“This is the first time (that) .”句型中，從句常用現(xiàn)在完成時。 答案：D- 3 -