新概念英语2unit3

为你解答如下：

will have been sent 是将来完成时，而完成时要接的时间状语用before 而不是when 引导。

如： Have you done your homework before (you are here)? 你（在这儿）之前完成作业了吗？

by （the time）有“在（某个时间）之前”的意思，相当于before。

不懂请追问，满意请采纳。谢谢！

天哪，这么多只给三十分？！

Key to Pre-unit Test 4 Key structures A 1 He missed the train because he did not hurry. 2 Although he ran fast, he failed to win the race. 3 I was so tired that I went to sleep immediately. 4 My neighbour, who went to Tokyo for a holiday, could not return home because he did not have enough money. 5 Finding the door unlocked, I went into the kitchen. 6 I bought a picture which was very valuable. 7 He walked quietly down the corridor so that no one would hear him. 8 They cleared the ground to build a house. B One day, a workman who was digging in a field accidentally struck a 6, 000-volt electricity cable with his spade. Although he was thrown twenty feet, he was unhurt. However, that night the neighbouring town was in darkness and no one knew what had happened. C a I'd(would)prefer…don't understand…doesn't matter…does that word mean…don't know…is bringing b got…decided…began…wrote…included…paid…rang…was not surprised…led…hid…was embarrassed c lookd…arrived…have been waiting…said…answered…Were…went…said…got…weren't…came…said…waited…didn't come…have you been doing…asked…have just been… answered d came… was used… used to hide… would often bury/often buried…(would)fail/failed… went…was examining… showed… was… dug… found e is setting out/will set out…will send…receive…receive/have received…will try…locate/have located…will fire…will carry…will pour…will be sent f will soon be sending up…will be taking…will grab…will soon be sending…will tell…will have sent g (had)discovered…appeared…had taken…died…happened…claimed…had died…had been searching…had been found h was taking…had been asked…having been instructed…must have been pleased…be stopped…could be heard… were both thrown 1 He told me to keep quiet. 2 He suggested(that) I should send him a telegram(or He suggested sending him…). 3 He insisted(that) I should ask him about it(or He insisted on my asking him…). 4 He told me not to worry about it. j 1 I wonder if he can wait a few minutes longe. 2 I wonder when he will arrive. 3 I wonder if he has passed his examination. 4 I wonder where he is. k 1 had listened 2 had written 3 would have had 1 meeting…running…pretending…meeting…coming…preventing…following…meeting…doing… coming…speaking D a 1 should/ought to come 2 had to do 3 should have/ought to have come 4 should have/ought to have asked b 1 He is having a new house built. 2 She will have a new dress made. 3 I had my hair cut yesterday. 4 We must have this tree cut down. c 1 I did not manage to get into town this morning. 2 They did not manage to find the boy who had run away. 3 He did not manage to find a new job. 4 I did not manage to translate the passage into English. E breakfast… the children… school…(the) market… The children… school… work… the house. some tarts for tea… a short time… butter and flour… sticky pastry… the telephone… the receiver…two sticky fingers…the voice…the receiver…a mess…pastry…the telephone…the doorknobs…the kitchen…the door bell…the dead…the postman…a registered letter F of…deal…most…most…oldest…many…Many…more…few…than…lot of…deal… from…less G 1 in…at…in…in 2 at…out of 3 to…in…with…in…in H 1 with 2 at 3 of 4 for5 to 6 for 7 of 8 to Special difficulties a 1 loose 4 hard 7 used to 10 pick 13 let 16 amused 2 rise 5 won 8 dropped 11 grown 14 part 17 checking 3 laid 6 quiet 9 at 12 invented 15 reason 18 advise b(sample sentences) If you promise not to mention it to anyone else, I'll tell you a secret. Have you said your prayers tonight, Johnny? He told me a lie. She said nothing to me or to anyone else. I always tell the children a story before they go to bed. ‘Are they really coming tonight?’-‘Of course. They said so. ’ c 1 Our school dining room is very large. 2 He told us a ghost story. 3 She gave me a birthday present. 4 We stopped at a village pub. 5 The party leader made a speech.

Key to Pre-unit Test 3 Key structures A 1.He read the book and returned it to the library. 2.The boy climbed the tree and picked some apples. 3.I opened the door and he came into the hall. 4.He looked for his pen but (he) could not find it. 5.She called to him but he didn't answer her. 6.Everyone was out so I left a message. 7.He plays both soccer and rugby. 8.Both children and adults enjoy holidays. 9.He must be either very clever or very foolish. 10.Neither George nor Dave plays football. 11.George plays neither soccer nor rugby. 12.He neither knows nor cares. 13.He not only forgot to take his umbrella but he forgot to take his briefcase as well. B a believe...are joking...do not know...know...believe...forget...looked...Are you trying...believed...think...do you live...do not know b put...cooked...smelt...told...sang...began...felt...put...crept c has begun...was...flew...has flown...landed...landed...has just refused...wanted...did not take...was d was telling/told...used to work...was...used to work...saved...bought...used to make...had...employed...smiled...remembered...was still smiling...opened...came...wanted e 1.We are going to leave at 6 o'clock. 2.I am going to pay these bills tomorrow.\ 3.Are you going to write to him? 4.She is not going to look for a new job. 5.When are you going to buy a new car? f will be held...will be visiting...will be building...will also be building...will be held...will be called...will have completed...will have finished g found...had run...had spent...took...saw...burst...said...had never run h was asked...was wanted...was told...had been picked up...is now being sent...to be found...was stolen i 1.He said (that) he was very tired. 2.She asked if I was tired. 3.Tom asked if Jack would arrive tomorrow. 4.Tom asked when Jack would arrive. 5.Mary asked if I'd ever been abroad. 6.Jane asked why I hadn't written to her. j 1.he's 2.don't hurry 3.you'd enjoy 4.were k 1.to see 2.ironing 3.to leave 4.arguing/to argue 5.seeing 6.waiting 7.working 8.going C a 1.mustn't 2.needn't 3.needn't 4.mustn't b 1.Have a look at this. 2.He had a wash before going out. 3.I had a swim in the sea this morning. 4.She is having a rest. c 1.Could 2.was able to 3.could 4.was able to D The Wayle...a small river...the park...the Wayle...the river bank...Some children...games...the bank...some people...the river...the children...a ball...a passing boat...Some people...the bank...the man in the boat...The ball...the water...the children...any E 1.There's little I can do to help him. 2.There aren't many apples on the tree, but you can pick a few if you want to. 3.He has less work to do than I have. 4.There isn't much whisky in this bottle, but you can have a little if you want it. 5.He has fewer books than I have. 6.There were few people in the shop. F 1.to 2.out of/from 3.(up)to 4.at 5.into G 1.with...to 2.for 3.for 4.with 5.at Special difficulties a 1.too 2.denied 3.jobs 4.passed 5.other 6.looked at 7.so 8.such a 9.continuously 10.robbed 11.one 12.notice b 'Haven't you finished this book yet?' he asked. 'I haven't even started it,' I answered. 'Why not?' he asked.'It's an exciting story.' 'Perhaps it is,' I answered, 'but it's too difficult for me. I spend more time looking up the dictionary than reading the book.' c 1.out 2.up 3.with 4.up 5.back d 1.made 2.make 3.does 4.make 5.do 6.makes