约1490字。

初二英语下学期学案
Lesson 3: Postcards! (Book4) 
1. Spring has arrived in Shijiazhuang.
1) arrive in… 到达较大的地方
They will arrive in the city next week.
arrive at… 到达较小的地方
They arrived at our school yesterday.
 2) arrive/ reach/ get to
2．I didn’t need my jacket!
   1) v. 需要  sb. need to do sth.
                   He needs to go to school today. 
He does not need to tell me. 
                   Does she need to know? 
              sb. need sth. 
                   He needs a new coat.
              sth. need doing
                    My shoes need mending.
   2) aux.（无时态、人称变化，用于否定句和疑问句）必须 
             He need not know.  他不必知道。 
             Need anybody know? 有必要让所有人都知道吗？ 
Need he go? 
             Need I stay?  我必须留下来吗？ 
Need you go now?  Yes, I must.  No,I needn't. 
             你现在得走吗？是,我现在得走. 不,我不必现在走。
   3) n. 需要；必要（抽象概念，不可数） 
           He felt the need of a better education. 
他感到有必要受到更良好的教育。 
 There is no need to hurry.  没有必要着急。 
3. The days are getting longer.
1) get/become 都可以指一个人的暂时性身心、天气或自然的变化。                              
       The girl is becoming more and more careful.
become 也表“成为”   He wants to become/be a doctor.
   2) turn 人/事物颜色的变化（与以前不同）
        Trees turn green in spring.
   3) go 肉体或精神上由强变弱/事物由强变弱，表示变坏、变质。
        The milk goes bad.
4.  Every morning I see many people in the park exercising.
1) see sb. doing sth. 看见某人正在干某事