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1、语法项目,时间、条件和让步状语从句,1时间状语从句注意点,_l was walking down the street，I saw some policemen_they heard the news，they were surprised_the child was playing with his toys，his parents were watching TV.They shouted slogans _they passed the square.,when表示从句动作和主句动作同时发生，或先于主句动作；while表示从句的动作与主句动作同时发生，并有延续的含义；as从句动作与主句动
2、作相并发生，常译为“边边”。,When/While,When,While,as,1)whenwhileas的用法。,He had hardly arrived when it began to snowHardly _when it began to snowWe had hardly walked into the hall when the lecture startedHardly _ walked into the hall when the lecture started_she gone to sleep than the telephone rang once more_the
3、boy reached the door than he came back,had he arrived,had we,No sooner had,No sooner had,2)含有关连词组hardlywhen和no soonerthan的两种句子结构表示“一就”。当hardly或no sooner位于句首时，要倒装。,3)一些表示时间的名词词组,如the moment,each time,every time,the first time,the year等,也用于引导时间状语从句，这时它们担当着连接词的功能。,_he went to Shanghai,he paid a visit t
4、o his former teacherA.For the first time B.The first time_l saw him,I thought of his fatherA.The moment B.At the moment,The first time,The moment,Each time he came,he would bring us a lot of flowers,2条件状语从句注意点,You will improve your oral English if you keep on practisingHe will never make progress _h
5、e works hardA.if B.unless If I _you,I would give up smoking at onceA.was B.am C.is D.were,1)if和unless是最常用的条件从句连接词，unless在意义上等于“ifnot”，并且语气较强。if可用于虚拟条件句，unless则一般不用于虚拟条件句。,unless,were,2)in case后接一般现在时、一般过去时或should，它所引导的从句为主句的动作提供理由。,Please take your raincoat along with you in case it rains.He always
6、slept by the phone in case she rang during the nightDont go out tomorrow morning in case Mr Li should come to visit you,3让步状语从句注意点,Whatever happens，we will not change our mindNo matter what happens，we will not change our mindHowever difficult the work is,we will try our best to finish it in time.No
7、matter how difficult the work is,we will try our best to finish it in time.,1)whatever(whenever,however)和no matter what(when，how)这两种形式都可引导让步状语从句，意义无差异。,2)形容词副词名词+asthough可引导一个让步状语从句，表示强调。,Though she is young,she knows so much about life.Young asthough she is,she knows so much about life.Though they
8、fought bravely,they had no chance of winning.Bravely asthough they fought,they had no chance of winning.Though he is a child,he can speaks three languages.Child asthough he is,he can speaks three languages.,3)even ifeven thoughalthoughthough都作“虽然”、“尽管”解释，但是even if和even though所表示的让步语气最强，although次之，th
9、ough最弱。,He will never tell you the truth even if he knows itThe old woman is unhappy though she has a lot of money,Fill in the blanks with conjunctions.,1)I was persuaded to do the job,_ I didnt want to.2)I talked to Henry _ the football players were resting in the middle of the game.3)The students
10、listened carefully _ they should fail to follow the speaker.4)_ she got anything to eat,she would save it for her children.5)They promised to wait _ the clock struck twelve.,even though/although/though,while,in case,Each time,until/till,6)Hard _ the task is,he is determined to finish it.7)_ she may have told you,I still think she is not to be trusted.8)I will not buy it _ the price is fair.9)The parent birds will not go their separate ways _ the young birds leave the nest.10)The pianist waited for silence _ he began to play.,as,Although/Though,unless,until/till,before,
