1、Unit 5Meeting your ancestors课时作业20Grammar&Writing基础夯实能力提升基础训练基 础 夯 实.句型转换1It is seven hours since the girl baby fell asleep.The baby girl _ for seven hours.2The Greens lived in this small town five months ago，and now they still live here.The Greens _ in this small town for five months.3Ten years has
2、 passed since I graduated from college._ ten years since I graduated from college.4The old couple got married forty years ago.The old couple _ for forty years.has been sleepinghave been livingIt ishas been married5They began contributing articles to our magazine several years ago，and they have kept
3、doing so until now.All these years they _ articles to our magazine.6She started to swim 2 hours ago，and now she is still swimming.She _ for 2 hours.7It has been six hours since he washed clothes.He _ for six hours.have been contributinghas been swimminghas been washing clothes8My sister graduated fr
4、om college 6 months ago.It _ 6 months since my sister _ from college.9The scientist came to study the Chinese ancient culture last year and he is still working in China.The scientist _ the Chinese ancient culture since last year.10They have lived in this city for ten years，and now they still live in
5、 this city.They _ in this city for ten years.has beengraduatedhas been studyinghave been living.单句填空1If we _(not act)now to protect the environment,well live to regret it.解析：句意：如果现在我们不采取行动保护环境的话，总有一天我们会后悔的。主句用一般将来时，从句用一般现在时表将来。dont act2Oh no!Were too late.The train _(leave).Thats OK.Well catch the n
6、ext train to London.解析：句意：哦！不！我们太晚了。火车早开走了。没什么。我们会赶上下一列通往伦敦的火车。根据语境不难看出，火车离开发生在两人对话之前，又根据too late可知，火车早已离站，故用现在完成时。has left3On Monday mornings it usually _(take)me an hour to drive to work although the actual distance is only 20 miles.解析：句意：在星期一早上，我通常要花费一个小时的时间开车上班，虽然实际距离只有20英里。根据本句中的usually可知本题叙述的是
7、一般情况，应用一般现在时。takes4Hurry up,kids!The school bus _(wait)for us!解析：句意：孩子们，快点！校车在等我们！由句子开头可知，本句要用现在进行时才能与“快点”相呼应。is waiting5The water supply has been cut off temporarily because the workers _(repair)one of the main pipes.解析：句意：水的供给已临时切断，因为工人们正在修理其中的一条主要管道。由“has been cut off temporarily”可知，现在已临时切断，故现在还没
8、修好，正在修理中，用现在进行时。are repairing6During the last three decades,the number of people participating in physical fitness programs _(increase)sharply.解析：根据本句中的时间状语during the last three decades“在过去的三十年间”可知要用现在完成时态。has increased7What about your self-drive trip yesterday?Tiring!The road is being widened,and w
9、e _(have)a rough ride.解析：根据问句的yesterday 可知描述过去的情况用一般过去时。had8I didnt think Id like the movie,but actually it _(be)pretty good.解析：根据but前的时态可知空白处为描述过去的情况，故用一般过去时。was9“Life is like walking in the snow”，Granny used to say，“because every step _(show)”解析：句意：奶奶过去常说：“生活就如在雪地里走路，因为每一步都显而易见。”表示事物本身的属性、特征时，谓语动词
10、用一般现在时，结合主句的“Life is like walking in the snow”的时态可知答案。show在句中为不及物动词，意为“显而易见”。shows10I had been working on math for the whole afternoon and the numbers _(swim)before my eyes.解析：句意：整个下午我都在做数学题，眼前全是数字。本题考查动词时态。and前的句子为过去完成进行时，表示过去一直在做某事，and后的句子陈述“过去那个时刻的事实”，故用一般过去时态。swam11Did you ask Sophia for help?I
11、_(do not)need toI managed perfectly well on my own.didnt解析：句意：你请索菲娅帮忙了吗？没那个必要，我自己可以做得非常好。由上句“Did you ask.？”可知设空处说的是过去的事。12The manager _(tell)the workers how to improve the program since 9 am.has been telling解析：句意：自从上午九点，经理一直在告诉工人们如何去改善这个程序。根据since 9 am可知设空处应该用现在完成时。又根据语境可知设空处强调动作现在还在进行，故用现在完成进行时。13A
12、fter Jack had sent some e-mails,he _(start)working on his project.started解析：句意：杰克在发送了一些电子邮件之后就开始从事他的项目。题干中after引导的时间状语从句中用had sent提示主句要用相应的过去时态。14The manager was concerned to hear that two of his trusted workers _(leave)were leaving解析：句意：经理听到他的两个可信赖的工人就要离开，很忧虑。主句的动词时态是一般过去时，从句要用相应的过去时态。根据语境可知两个工人打算要
13、走，还没有走，用进行时表将来。故用过去进行时。15The letters for the boss _(put)on his desk but he didnt read them until three days later.were put解析：句意：给老板的信放在他的桌子上，但他三天后才读。动作发生在过去，用过去时，同时，主语letters与put为动宾关系，故用过去时的被动语态。.完成句子1He dropped out due to his illness.He _(一直考虑)coming back since last year.(consider)2They _(一直讨论这个问题w
14、ithout interruption for about two hours.(discuss)3Ask him to have a rest please.He _(一直磨刀)all the morning.(sharpen)4Whats wrong with the work？Why have they _(一直分析)it so long？(analyze)No idea.has been consideringhave been discussing the problemhas been sharpening knivesbeen analyzing5My friend _(一直领我
15、参观)the city the whole morning.(show)6In order to prepare for the party to be held tomorrow，Lala _(一直摘水果)all day.(pick)7They _(已修)the car for almost one week；now they can have a rest.(repair)8He _(刚刚完成)his paper，and gone out for pleasure.(finish)has been showing me aroundhas been picking fruitshave repairedhas just finished9The price of agricultural products _(上涨)these years.(rise)10The Chinese government _(已经采取了)several measures to overcome difficulties brought by the international crisis.(adopt)has been risinghas adopted谢谢观赏！Thanks!