until-讲解与练习

1、until 直到。/ not.until 期末考试36. I watched the World Cup in a bar and I_ home_ 1:00 in the morning.A. go; untilB. didnt go; untilC. went; until D. have gone; until until：表示动作、状态的持续，强调主句的动作或状态一直持续直到从句的动作发生，常与表示延续性动作的动词连用。I waited until 3 oclock in the morning, but he didnt come back.He lived with his par

2、ents until he left for college.notuntil: 表示“到。为止”，“直到。才”，常与瞬间性动词连用。The noise of the streets didnt stop until midnight.I didnt started to sing until he found my talent(才能).练习：理解并翻译下列句子：1. They talked until dawn.(黎明)2. We wont start until Tom comes.3. She didnt arrive until 6 oclock.4. Dont leave the

3、room until your parents told you to.5. Wait until I call.改正有错误的句子：1. My father came back until midnight yesterday.2. Tom watched TV until he finished his homework.3. Tom watched TV until his mother told him to stop.4. I went home until it stopped raining.5. They stopped talking until Cisca came in.条

4、件状语从句由引导词if、unless或其他引导词引导的状语从句叫做条件状语从句。在英文中，条件是指某一件事情实现之后（状语从句中的动作），其它事情（主句中的动作）才能发生，通常译作“假如”。（注意：在含有条件状语从句的复合句中，表示将来时态，主句是一般将来时态，从句要用一般将来时一般现在时,祈使句或情态动词主将从现原则。一、 由if引导的条件状语从句：判断下列句子是否为条件状语从句：1. If I fail the math test, I will take it again.2. There wont be any food left in the cafeteria if you com

5、e at 12:30.3. I will give this letter to Gina if I see her next time.4. If he steals things, take him to the police station!5. If I learn from this teacher, I may be the best student in the class.6. I dont know if I can finish this work on time.7. Im not sure if this is Toms dictionary.8. You can le

6、arn English well if you work hard.完成book2 p33 exercise 7b&7cunless（除非，如果不。） 引导的条件状语从句（仍遵循主将从现原则）理解并翻译下列句子：1. Unless she asks someone to come with her, her parents wont allow her to go to Brazil.2. Unless the girl runs very fast, she may not catch the bus.3. Unless we do something now, there will be

7、more and more traffic jams and temperatures will continue to rise.4. You cant visit the history museum unless it is Wednesday.填入正确形式的词1. We _(not ) understand this question unless our teach _(explain).2. Unless he _(study) harder, he _(fail ) this test.3. If the rain _(not stop) in an hour, we _(be

8、late) for school.4. All of us _(be safe) if nobody _(know) our secret.5. I _ her the answer if she _me.A. can tell, will ask B. will tell, will ask C. would tell, ask D. will tell, asks6. What are you going to do tomorrow? -Well go to the library tomorrow if it _.A. isnt rain B. rain C. wont rain D. doesnt rain7. Do you kn