1、Unit 3 The world meets China Period FourGrammarReview：adverbial clauses 达标检测 当堂检测 基础达标演练 语法导学 感悟规律 重点难点剖析 内容索引内容索引 感知以下句子，补全方框下的小题感知以下句子，补全方框下的小题 语法感知 语 法 导 学感悟规律 重点难点剖析 1.Every time he walked by the lake，he thought of his childhood life. 2.So long as you keep on trying，you will surely succeed. 3.No
2、w that you are old enough to judge things，you should start your own career. 4.Even though you dont like wine，just try a glass of beer. 5.Please do it as I told you. 6.Study hard so that you can pass the entrance examination. 判断以上句中判断以上句中的的蓝色蓝色体体部分引导的是什么类型的状语从句：部分引导的是什么类型的状语从句： 1. 状语状语从句从句2. 状语状语从句从句
3、3. 状语状语从句从句 4. 状语状语从句从句5. 状语状语从句从句6. 状语状语从句从句 时间时间 让步让步 条件条件 方式方式 原因原因 目的目的 语法精析 一、时间状语从句一、时间状语从句 1.before引导的从句中不用否定式谓语。常用如下句型：引导的从句中不用否定式谓语。常用如下句型： It will be long before.(得过好久才得过好久才) It will not be long before.(过不了多久就过不了多久就) It was long before.(过了好久才过了好久才) It was not long before.(过了不久就过了不久就) 2.sin
4、ce后面所用动词不同，该动词所表示动作持续时间的计算方法也不同。后面所用动词不同，该动词所表示动作持续时间的计算方法也不同。 since持续性动词过去式持续性动词过去式(从动作结束时算起从动作结束时算起) since瞬间动词过去式瞬间动词过去式(从该动作发生时算起从该动作发生时算起) It is two years since he smoked. 他他戒烟已有两年了。戒烟已有两年了。 It is two years since he joined the army. 他参军两年了。他参军两年了。 3.as，when，while用法一览表。用法一览表。 类别类别作用作用例句例句 as as表示
5、表示“当当的时候的时候”，往往和，往往和 when/while通用，但它着重强调主句通用，但它着重强调主句 与从句的动作或事情同时或几乎同与从句的动作或事情同时或几乎同 时发生。时发生。 She came up as I was cooking. (同时同时) The runners started as the gun went off.(几乎同时几乎同时) when (at or during the time that )既可以表既可以表 示在某一点的时候，又可表示在某示在某一点的时候，又可表示在某 一段时间内，主句与从句的动作或一段时间内，主句与从句的动作或 事情可以同时发生也可以先后
6、发生。事情可以同时发生也可以先后发生。 It was raining when we arrived. (指时间点指时间点) When we were at school，we went to the library every day. (在一段时间内在一段时间内) while while意思是意思是“当当的时候的时候”或或 “在某一段时间里在某一段时间里”。主句中的动。主句中的动 作或事情在从句中的动作或事情的作或事情在从句中的动作或事情的 进展过程中发生，从句中的动词一进展过程中发生，从句中的动词一 般要用延续性动词。在般要用延续性动词。在when表示表示a period of time
7、时，两者可以互换。时，两者可以互换。 Please dont talk so loud while others are working. He fell asleep while/when reading. Strike while the iron is hot.(用用as 或或when不可，这里的不可，这里的while意思意思 是是“趁趁”) 4.引导时间状语从句的连接词除上述外还有：引导时间状语从句的连接词除上述外还有： (1)till，not.until.，until Dont get off the bus until it has stopped. He waited for h
8、is father until/till it was twelve oclock. (2)hardly/scarcely.when.，no sooner.than.表示表示“刚刚就就” We had hardly got/Hardly had we got into the country when it began to rain. No sooner had he arrived/He had no sooner arrived than she started complaining. (3)directly，immediately，the moment，the minute，the
9、instant，as soon as 意为意为“一一就就” He made for the door directly he heard the knock. The moment he saw his mother，he burst into tears. (4)each time，every time Each time he came to my city，he would call on me. 二、让步状语从句二、让步状语从句 1.although与与though可以引导让步状语从句，不能与可以引导让步状语从句，不能与but连用，但可以与连用，但可以与yet 连用。连用。 Altho
10、ugh/Though they are poor，(yet) they are warmhearted. 2.even if或或even though引导让步状语从句，表示引导让步状语从句，表示“即使，纵然即使，纵然”，用来使人，用来使人 注意下文所强调内容的性质。注意下文所强调内容的性质。 Ill get there even if/though I have to sell my house to get enough money to go by air. 3.no matter后接后接who，what，where，how等疑问词引导让步状语从句，也可等疑问词引导让步状语从句，也可 以在
11、这类疑问词后面加上以在这类疑问词后面加上-ever构成构成whoever，whatever，wherever，however 等。但在引导名词性从句时只能用等。但在引导名词性从句时只能用“疑问词疑问词-ever”类词。类词。 Dont trust him，no matter what/whatever he says. I will eat whatever you give me. No matter how hard the work is，youd better try to do it well. 4.as也可以引导让步状语从句，需将从句中的表语、状语以及谓语中的实义动也可以引导让步状
12、语从句，需将从句中的表语、状语以及谓语中的实义动 词提前至从句句首，引起倒装；作表语的单数可数名词前如有冠词，冠词需词提前至从句句首，引起倒装；作表语的单数可数名词前如有冠词，冠词需 省去。省去。though引导的从句也可以倒装，但引导的从句也可以倒装，但although引导的从句不可以倒装。引导的从句不可以倒装。 Child as (though) he is，he knows a lot. Much as I like it，I wont buy. Try as he would，he couldnt lift the heavy box. 5.while也可以引导让步状语从句，表示也可以
13、引导让步状语从句，表示“尽管尽管”，比，比though/although语气弱。语气弱。 while引导的让步状语从句一般要位于句首。引导的让步状语从句一般要位于句首。 三、原因状语从句：三、原因状语从句：because，as，since，now that 1.表示不知道的原因时用表示不知道的原因时用because，即说话人认为听话人不知道，因此，即说话人认为听话人不知道，因此because 从句是全句最重要的部分，通常它被置于主句之后。从句是全句最重要的部分，通常它被置于主句之后。 You want to know why Im leaving？Im leaving because Im f
14、ed up with the boss. 2.表示已经知道的原因时用表示已经知道的原因时用as或或since，即某种原因在说话人看来已经很明显，即某种原因在说话人看来已经很明显， 或已为听话人所熟悉，因此它是句中不很重要的部分。或已为听话人所熟悉，因此它是句中不很重要的部分。since要比要比as正式一些，正式一些， 它们通常被置于主句之前，但有时却相反。它们通常被置于主句之前，但有时却相反。 Seeing all of the children already seated，he said，“Since everyone is here， lets start.” 3.下列情况下只能使用下列
15、情况下只能使用because： (1)在回答在回答why的问句时；的问句时； (2)在用于强调句型时在用于强调句型时。 四、地点状语从句：四、地点状语从句：where，wherever等等 Make a mark wherever you have any questions. We will go where the Party directs us. 五、目的状语从句：五、目的状语从句：that，so that，in order that 注意：目的状语从句中的谓语动词常与情态动词连用，否则可能是结果状语注意：目的状语从句中的谓语动词常与情态动词连用，否则可能是结果状语 从句，不可置于句首
16、。从句，不可置于句首。 He got up early so that he could catch the early train. 六、结果状语从句：六、结果状语从句：that，so that，so.that.，such.that. 注意：注意：so形容词形容词/副词副词that从句；从句；such名词短语名词短语that从句。从句。 She is so good that we all like her. He is such a good teacher that we all respect him. 七、方式状语从句：七、方式状语从句：as，as if/though Ill do
17、as I am told to. She loves the boy as if she were his mother. 八、条件状语从句：八、条件状语从句：if，unless，so/as long as，in case，once，on condition that等等 You can use my bike as long as you return it on time. 九、比较状语从句：九、比较状语从句：than；(not)as/so.as.；not the same as；the比较级，比较级， the比较级比较级 He works as hard as others. We tr
18、eat boys exactly the same as girls. The sun is much bigger than the earth. The more you eat，the fatter you will be. 十、对于状语从句，在实际运用中主要存在以下问题：十、对于状语从句，在实际运用中主要存在以下问题： 1.从句意识缺乏从句意识缺乏 The Expo is very attractive.We are all eager to pay a visit to it. The Expo is so attractive that we are all eager to pa
19、y a visit to it. 通过比较不难发现，后句比前句更加紧凑且逻辑性强，增强了表达效果。通过比较不难发现，后句比前句更加紧凑且逻辑性强，增强了表达效果。 2.状语从句成分残缺状语从句成分残缺 (误误)Please close the doors and windows before leave the classroom. (正正)Please close the doors and windows before you leave the classroom. 由于受汉语的干扰，第一句中状语从句中漏掉了主语。由于受汉语的干扰，第一句中状语从句中漏掉了主语。 3.连接词误用连接词误用
20、 (误误)Teachers and parents should respect us no matter we are in or outside school. (正正)Teachers and parents should respect us whether we are in or outside school. 两句尽管从汉语角度来看意思相同，但是从语法角度来看，两句尽管从汉语角度来看意思相同，但是从语法角度来看，no matter一般后一般后 跟特殊疑问词，而跟特殊疑问词，而whether可直接引导状语从句。可直接引导状语从句。 (误误)Though he is consider
21、ed a great writer，but his works are not widely read. (正正)Though he is considered a great writer，his works are not widely read. 在让步状语从句中，在让步状语从句中，though和和although不能与不能与but连用。连用。 返 回 .选择方框内的连词填空选择方框内的连词填空 达 标 检 测当堂检测 基础达标演练 on condition that；because；unless；in order that；even though；as if； than；that；si
22、nce；where 1.The engine stopped running the fuel was used up. 2.We will have a picnic tomorrow it rains or its very cold. 3.Youd better not leave the medicine kids can reach it. 4.We have been to the factory twice it was set up in 1992. 5.Bill had so many falls he got black and blue all over. 6.No so
23、oner had he seen a blind man he got up from his seat. because unless where since that than on condition that；because；unless；in order that；even though；as if； than；that；since；where 7. I have many delicate feelings to share，who can I speak to? 8.She stood at the door she was waiting for someone. 9.The
24、teacher underlined the words the students might pay special attention to them. 10.They agreed to lend us the car we returned it before the weekend. Even though as if in order that on condition that .用状语从句完成句子用状语从句完成句子 11. ，we wont wait for him. 如果他在如果他在12点前不来，我们就不等他了。点前不来，我们就不等他了。 12.Hardly had he g
25、one to bed . 他刚刚睡下，门铃就响了。他刚刚睡下，门铃就响了。 13. ，she failed to pass the exam. 尽管她非常努力，但还是没有通过那次考试。尽管她非常努力，但还是没有通过那次考试。(倒装倒装) 14. ，please remind me of the appointment. 万一我忘记了，请提醒我这次约会。万一我忘记了，请提醒我这次约会。 15.The boy looked around . 那个男孩环顾四周，好像在寻找什么东西似的。那个男孩环顾四周，好像在寻找什么东西似的。 If he doesnt come before 12 oclock when the door bell rang Hard as/though she tried In case I forget as if he was in search of something 返 回 本课结束
