上海秋季牛津新世纪英语高一上册高一上状语从句专题(含词汇语法练习)

Now that you are here, you’d better stay. 你既然来了，最好还是留下吧(既来之，则安之)。

除以上提到的大家比较熟悉的引导原因状语从句的从属连词外，when有时也可引导原因状语从句(when表示“既然”)

I won’t tell you when you won’t listen. 既然你不想听，我就不告诉你了。

原因状语从句的连接词

1: because

引导的原因状语从句一般放于主句之后，because表示直接原因，语气最强，最适合回答why引导的疑问句。例如：

I do it because I like it. 我做这件事是因为我喜欢。

注意：“not ... because”结构中的not否定的是because引导的整个从句，例如：

The country is not strong because it is large. 国强不在大。

2: since

引导的原因状语从句一般放于主句之前表示已知的、显然的理由(通常被翻译成“既然”)，较为正式，

语气比because弱。例如：

Since you are free today, you had better help me with my mathematics.

既然今天你休息，你最好帮我补习数学。

注意：seeing (that)，now (that)，considering (that)，in that这几个词汇与since引导的原因状语从句意思相近，都表示“既然”。例如：

Seeing (that) he refused to help us, there’s no reason that we should no w help him. 他既然曾经拒绝帮助我们，我们现在没有理由要来帮助他。

Now (that) you are grown up, you should not rely on your parents. 既然你长大了，就不应该依靠你的父母了。Considering (that) everybody is here, let’s begin our discussion. 既然大家都到了，我们就开始讨论吧。

In that he is ill, he feels unable to do it. 因为有病，他觉得做不了那件事。

3: as

引导原因状语从句时表示附带说明的“双方已知的原因”，语气比since弱，较为正式，位置较为灵活(常放于主句之前)。例如：

As it is raining, you’d better take a taxi. 既然在下雨，你最好乘出租汽车。

As you are tired, you had better rest. 既然累了，你最好休息一下。

I went to bed early, as I was exhausted. 我睡得早，因为我筋疲力尽了。

4: for

引导的是并列句表示原因但并不说明主句行为发生的直接原因，只提供一些辅助性的补充说明，for引导的并列句只能放于主句之后并且必须用逗号将其与主句隔开。例如：

He could not have seen me, for I was not there. 他不可能见过我，因为我不在那里。

【例题精讲】

1.—Did you return Fred’s call?

—I didn’t need to ____I’ll see him tomorrow.

A. though

B. unless

C. when

D. because

2.____ you’ve got a chance, you might as well make full use of it.

A. Now that

B. After

C. Although

D. As soon as

3. A man cannot smile like a child, ____ a child smiles with his eyes, while a man smiles with his lips alone.

教学建议：

1. 规定学生在20分钟内完成；

2. 要求学生对不确定有疑问的题目做标记；

3．下节新课前让学生相互批改表扬正确率最高的学生；

4．让作对的学生给做错的学生讲题，老师进行补充；

5．老师对错误率较高的题目相关的知识点进行复习。

一、选择最佳答案

1. It was quiet ______ those big trucks started coming through the town.

A. before

B. after

C. until

D. unless

2. It seemed only seconds ______ the boy finished washing his face.

A. when

B. before

C. after

D. even if

3. Hardly had he reached the school gate ______the bell rang.

A. while

B. when

C. as

D. as soon as

4.We were told that we should follow the main road _____ we reached the central railway station.

A. whenever

B. until

C. while

D. wherever

5. I recognized you ______ I saw you at the airport.

A. the moment

B. while

C. after

D. once

6. He was about to go to bed ______ the doorbell rang.

A. while

B. as

C. before

D. when

7.______I listen to your advice, I get into trouble.

A. Every time

B. When

C. While

D. Until

8. _____ John was watching TV, his wife was cooking.

A. As

B. As soon as

C. While

D. Till

9. The children ran away from the orchard(果园) ______ they saw the guard.

A. the moment

B. after

C. before

D. as

10. No sooner had I arrived home _____ it began to rain.

A. when

B. while

C. as

D. than

11. Several weeks had gone by _____ I realized the painting was missing.

A. as

B. before

C. since

D. when