七年级下册Section A优秀教学ppt课件

这是一份七年级下册Section A优秀教学ppt课件，文件包含人教版英语七年级下册Unit4第2课时AGrammarFocus-3c教学课件pptx、人教版英语七年级下册Unit4SectionA第2课时3a3c教案doc等2份课件配套教学资源，其中PPT共41页， 欢迎下载使用。

1. 学生能够使用 can, can’t, have t, must, 祈使句 谈论规章制度。2. 学生能够掌握并运用对话当中呈现的词汇,能复 述和模仿对话。3. 没有规矩不成方圆，做一个遵规守纪的好学生。
dining rules
drmitry rules
library rules
class rules
What rules d yu knw in yur schl?
1. A: What are the rules in ur schl? B: We must be n time fr class.2. A: Can we …? B: Yes, we can. / N, we can’t. We must…3. A: D we have t …? B: Yes, we d. / N, we dn’t.
Talk abut ur schl rules
Grammar Fcus
1.祈使句的肯定句和否定句是怎样构成的？一般什么情况下使用祈使句？2.圈出情态动词， 观察它们在用法上有什么共同点？3.can 在本单元主要表示什么含义？它还可以表达什么意思？4.have t 在句法上和其他情态动词的区别在哪里？
祈使句的否定句在动词原形前加dn’t，表示“不要做什么事”。
祈使句的肯定句通常以动词原形前开头，如： Please be quiet. The baby is sleeping.
(1)用来表示请求、命令、劝告、警告、禁止等的句子叫祈使句。祈使句因对象（主语）都是第二人称，所以通常省略主语(yu)而以动词原形开头，句末用句号或感叹号，读时用降调。
Please bring sme water t me. 请给我拿点水来。（表请求）G ut! 出去！（表命令）Dn’t run in the hallways. 不要在走廊里跑。（表劝告）Be careful! 小心！（表警告）N eating! 禁止吃东西！（表禁止）
? ? ? ? ? ?
Sit dwn, please.
Dn’t run here.
Be quiet, please.
Dn’t be nisy.
Let me help yu.
Dn’t let him g./Let him nt g.
(1)表示强调时，可在动词原形前加 d，意为 “一定，务必”。一定要来看我。
N swimming!
D cme t see me.
(2)为表示礼貌，可在祈使句的句首或句末加上 please。 当 please 在句末时，要用逗号与句子其他部分隔开。请遵守校规。
Please fllw the schl rules.
＝Fllw the schl rules, please.
(凉山州中考)—Mm, can I play cmputer games this evening?—______ yur hmewrk first, and then we’ll talk abut it. A. Finishing B. Finish C. T finish D. Finished
(青海中考)______ n the grass. It’s a rule f the park.Step B. Dn’t step C. T step
can/must/have t +动词原形have t 与其他情态动词不同，有人称和数的变化
情态动词 must 与 have t
1.情态动词 must 的用法
(1)意为“必须”，表示主观的义务或必要，无人称、数和时态的变化。以 must 开头的一般疑问句，肯定回答一般用 must，否定回答一般用 needn’t 或dn’t/desn’t have t，意为“不必”，不用 mustn’t；mustn’t 常用于否定句中，表示“不允许；禁止”。
我必须做作业。你不能在这儿游泳。我们必须马上打扫教室吗？ 不，你们不必。你们可以放学后打扫。 —________ we clean the classrm at nce? —N, yu _______. Yu may clean it after schl.
I must d my hmewrk.
Yu mustn’t swim here.
(2)意为“一定；准是”，表示肯定推测，用于肯定句中。这本书一定是玛丽的。
The bk must be Mary’s.
2.情态动词 have t 的用法
(1) have t 意为“必须；不得不”，后接动词原形，表示客观需要做的事情。现在我不得不离开。
I have t leave nw.
(2) have t 有人称、数和时态的变化，其 第三人称单数形式为 has t。辛迪每天必须铺床。
Cindy has t make the bed every day.
(3)含有 have t 或 has t 的句子需分别借助助动词 d 或 des 构成疑问句或否定句。她必须早起吗？ 你不必8点钟到那儿。
Des she have t get up early?
Yu dn’t have t arrive there at eight.
(自贡中考)—Must we wear schl unifrms everywhere?—N, we ______. A. needn’t B. mustn’t C. can’t
(青岛中考)—Allen, shall we g t the bkstre this afternn?—I’m srry, David, but I ______ meet my cusin at the train statin. A. have t B. can C. may D. culd
Lk at the pictures. D yu knw the meaning f these signs?
D yu knw the rules fr the schl library?
We can’t eat r drink anything.
Dn’t eat r drink.
N eating r drinking.
We can’t take phts here.
Dn’t take phts here.
We can’t listen t music.
Dn’t listen t music.
Dn’t take phts.
Write the rules fr the schl library.
1.N talking.
3. N music.
D yu knw these signs?
Tips: N+n. / v.-ing = Dn’t d
N mbile phne
Must wear mask
Use the wrds t make questins abut the rules. Then write answers accrding t yur schl.
1. Be quiet? (she/have t /in the library) Q: Des she have t be quiet in the library? A: Yes, she des.
2. Eat? (he/have t/in the dining hall) Q: ___________________________________ A: ___________________________________3. Listen t music? (we/can/in the hallways) Q: __________________________________ A: __________________________________
Des he have t eat in the dining hall?
Yes, he des.
Can we listen t music in the hallways?
N, we can’t.
4. Wear a hat? (we/can/in the classrm) Q: __________________________________ A: __________________________________
Can we wear a hat in the classrm?
Make up five cl rules fr yur dream schl. Share yur rules with the class. Yur classmates vte fr the Clest Schl!
At my dream schl, we dn’t have t cme t schl every day. We …
At my dream schl, we dn’t have t cme t schl every day.
We can eat in class.
We dn’t have t wear schl unifrm.
We can listen t music in class.
At my dream schl, We can __________________.We can’t _________________.We dn’t have t __________.We dn’t have t __________. We have t /must _________.
Make up the cl rules fr yur dream schl.
Cmputer Rm Rules1. ________________ 2. ________________3. ________________ 4. ________________5. ________________ 6. ________________
Discuss and make rules fr the cmputer rm in yur schl.
Cmputer Rm Rules1. ____________________________________.2. ____________________________________.3. ____________________________________.4. ____________________________________. 5. ____________________________________.
Dn’t run in the cmputer rm
Be quiet in the cmputer rm
Dn’t eat r drink in the cmputer rm
Wear slippers in the cmputer rm
Clean the cmputer rm every day
祈使句和情态动词must, can 及 have t 表达规章制度.
① Dn’t … ② … can’t …③ … have t …④ … must …⑤ … can …