英语八年级上册Section B导学案

Unit10- 4

If you go to the party, you’ll have a good time.

Period Four Section B （2a—2b）

学习目标：

1重点词汇：keep .....to oneself , normal , teenager , unless , certainly , wallet , worried , mile , angry , in the end , solve , advise , ......

2.重点句型：I think talking to someone helps a lot .

If people have problems , they should talk to other people.

Unless we talk to someone ,  we will certainly feel worse .

3.条件状语从句的应用。

预习交流

（检查个人完成预习情况。）

I．组内成员互相抽读生词，相互纠错，教师抽读。

II． 组内成员相互批改英译汉练习，作出评价_________(ABC)。

互助提升

探究点一unless

unless是从属连词，引导条件状语从句，含有否定意义，相当于if条件状语从句的否定形式。所以unless = if not。注意：unless引导的条件状语从句和if条件状语从句，与其它时间状语从句一样，用一般现在时代替将来时。

You will miss the bus unless you hurry up．你要不快点就会错过班车。   

 You’ll fail in chemistry again unless you work harder．如果你不再加把劲，你化学考试还会不及格。   

 unless连接一个条件从句,等于if…not, 不同点在于:if …not是口语, unless为书面语,unless有否定意思。例如: I shall go there unless it rains. = I shall go there if it doesn’t rain. 我去,除非下雨(如果不下雨,我就去)。 但在下列情况下二者不能换用:

1)表示“由于未发生B而发生A”的句子只能用if…not, 而不用unless。例如:
　I’d be glad if she doesn’t come this evening. 如果今天晚上她不来我将很高兴。
　2)if…not可以引导一个虚拟条件句,unless一般不引导虚拟条件句。例如:
　If she weren’t so silly, she would understand. 如果她不那么傻,她就会明白了。
针对训练
（   ）1. You won’t catch up with your classmates ____ you work harder.
　     A. and   B. or   C. unless   D. if
（   ）2. The sports meet will continue ____ it rains this afternoon.
　     A. if  B. since  C. as soon as  D. unless

探究点二  have problems with sth\ have a problem (in) doing sth.做某事有困难

be busy (in) doing sth.忙于做某事    have difficulty (in) doing sth.做某事有困难

have trouble (in) doing sth.做某事有困难 have a good time/fun (in) doing sth. 做某事很开心spend money(time) (in) doing sth. 花钱（时间）做某事

体验成功

一、单项选择。[来源:Zxxk.Com]

(    )1. I won’t pass the exam       I work hard. 

A. when       B. if         C. unless

(    )2. I have some problems with my schoolwork. Can you give me some       ?

A. advices      B. advice      C. advise (    )3.Linda was lost in the forest and her parents were really        her.

A. worry       B. worried about      C.worried[来源:Zxxk.Com]

(    )4. Sara studies English very        and her English is       in her class.

A. careful, good       B. carefully, well     

C. carefully, the best

(    )5. Some students are so        that they often make mistakes in their homework.

A. careful    B. careless     C. serious

快乐心得

1.我帮助了_________同学说____________。

2.________同学帮助我学会了___________.

3.我在课堂上与同学对话________次。

4.我对我在课堂上的_____（表现）感到满意。

5.本堂课我还有________________不懂。

拓展延伸

The sun is always shining. But it can only shine on one side of the earth at one time. When the sun is shining on one side of the earth, it is night on the other side.

　 At night, you can see the stars(星星). The stars are in the sky all day. But the light from the sun is so bright that you can’t see them. When night come, there is no light, and the stars are bright enough to see. The stars look very small. But some of them are even bigger than the sun. They look small because they are so far away from you. Big things look much smaller when they are far away. The sun is closer(近)to the earth than other stars, so it looks bigger.

( )1．When it is night, the sun ________ .

     A. doesn’t shine              [来源:学*科*网Z*X*X*K]

B. shines for a short time

     C. disappears(消失)           

D. shines on the other side of the earth

( )2．We can’t see the stars in the sky at daytime(白天)because ________ .

     A. there are no stars there     

     B. the stars are much smaller than the sun

     C. the bright light from the sun makes them not seen(被看见) 

     D. the stars come out only at night

( )3．The stars look small because ________ .

A. they are far away　             

B. they are small　

C. they have no light　            

D. they are in the sky

( )4.Small things may look ________ when they are close.

A. bigger    B. small  C. near    D. far away

( )5．The sun looks bigger than other stars because ________ .

  A. It’s bigger      

B. It’s far away in the sky[来源:学,科,网]

  C. it gives much bright light  

D. It’s closer to the earth than other stars

[来源:学科网]