Lesson 20 No Stopping!—because引导的原因状语从句.ppt

1、Because 引导的原因状语从句,引导原因状语从句的从属连词主要的有because, as, since, for, seeing (that), now (that), considering (that)， in that等： The woolly shrank because it was washed badly. 毛衣因洗得不得法而缩水。 I cant get to sleep because of the noise outside. 由于外面声音嘈杂我睡不着。,Since As weve no money, we cant buy it. 由于我们没钱，我们无法购买它。 See

2、ing that its raining, wed better stay indoors. 既然外边在下雨，我们最好待在室内。 Now that you are here, youd better stay. 你既然来了，最好还是留下吧(既来之，则安之)。,because 语势最强，表示不知道的原因用because，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，通常被放置于主语之后；有时也放在主句之前。 You want to know why I am leaving? I am leaving because I am fed up. (2)回答why提出的问题，只

3、能用because。 A：Why cant I go? B：Because you are too young.,(3)在强调句中强调原因，只能用because引导。 Its because he is kind that we like him. (4)because从句可用作表语。这是主语一般都是it， this， that。 This is because the earth is traveling around the sun.,（5）关于notbecause结构 该结构中的否定词有时否定主句，有时否定从句，一般要根据句子 的意思作出正确合乎逻辑的理解。若not否定主句，最好在bec

4、ause 之前用逗号，否则会引起歧义，如下句在没有特定上下文时就有两 种解释： I didnt go because I was afraid. 我没有去是因为怕。/ 我不是因为怕才去。 不过若because之前有just修饰，一般认为not 是否定从句的： You shouldnt get angry just because some people speak ill of you. 你不要因为有人说你坏话而生气。,（6）because习惯上不与so连用。汉语习惯上说“因为 所以”，但英语习惯上却不能将 so与because 连用： 例：因为下雨，所以我们呆在家里。 正：Because i

5、t was raining, we stayed at home. It was raining, so we stayed at home. 误：Because it was raining, so we stayed at home.,（7）because 从句与 because of短语的转换 Because引导的原因状语从句有时可与because of 短语转换， because of后加的原因可以为好或坏，但最正规的还是because。 He cant come because he is ill. He cant come because of his illness. 他因病不能

6、来。 I said nothing about it because his wife was there. I said nothing about it because of his wifes being there. 因为他妻子在那儿，我对此事只字未提。,一、填入恰当的连词 1. I didnt go to school yesterday _ I was ill. 2. _ everybody is here, lets begin our meeting. 3. _ you are in poor health, you should not stay up late. 4. I asked her to stay to tea, _ I had something to tell her. 5. _ all the passengers are here, why dont we start at once? 6. Bill wont make any progress