外研版九年级上册M5U3课件

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(6) 在请求、命令和口号中,常用无动词 祈使句,它实际上是省略了动词,从而 使句子更简洁有力。如: Just a minute, please! 请稍等!
口诀 下面的口诀总结了祈使句的一般规律。 一起来看看吧! 祈使句, 有特点, 动词原形摆在前, 否定句式也不难,
Don't 放在最前面, 其它一律都不变。
1. If you __w_a_n_t_ (want) to see old machines, ___g_o___(go) to the museum.
2. If you __v_is_it__ (visit) London, _t_a_k_e_ (take) a boat trip on the river.
Complete the sentences.
wear warm clothes
6. If you want to go skating, ____________.
Complete the sentences.
not shout, not run
7. If you visit a museum, ____________.
2. If you want to know where you are, ______________.
Complete the sentences.
wait for the next train
3. If you cannot arrive at the station on time, ______________.
5. 上课安静。 Be quiet in class.
6. 不要随处乱扔垃圾。 Don’t throw rubbish everywhere. 7. 不打架不骂人。 Don’t fight or say rude words. 8. 有事请假。 Ask for leave.
9. 友好待同学。 Be friendly to classmates.
3. D__o_n_’t__sp_e_a_k_ (not, speak) with your mouth full of food.
4. _D_o_n_’_t_t_a_lk_ (not, talk) and __re_a_d___ (read) aloud.
5. _D_o_n__’t_l_e_a_v_e_ (not, leave) your homework for tomorrow, Larry.
before you finish your homework.
Presentation
祈使句用来表达叮嘱、劝告、希望、禁
止、警告、请求或命令等。祈使句最常用 来表达命令。
Go and wash your hands. 快去洗手。 (命令)
Be quiet, please.
请安静。(请求)来自Be kind to our sister. 要对我们的妹妹友善。 (劝告)
5. If any student _h_a_s__ (have) a high fever, __s_en__d_ (send) him / her to the school doctor at once.
6. If you __w__a_n_t _ (want) to know how it works, __r_e_a_d__ (read) the book.
Choose the correct answers.
(重庆中考) Work hard, _______ you may catch up with your classmates soon.
A. or B. but C. and D. yet
解析:本句是“祈使句+and”的句型,句 意为“努力学习,你会很快赶上其他同学 的”,and在句中表示承接关系,所以选 C项。
Don’t jump. (3)情态动词must表示“禁止”。
You mustn’t play with fire. (4)can’t表示“不允许”。
You can’t make any noise. (5)You aren’t allowed to …表示“不允许 对方做某事”。
You aren’t allowed to watch TV at home
Don't stand up. 别站起来。 Don't be careless. 别粗心。 Don't let them play with fire. 别让他们玩火。
(5) Let’s 构成的祈使句往往用于提出建议。 否定形式为:Let + 宾语 + not + 动词原 形 + 其它成分。如: Let’s go to school together. 咱们一起上学去吧。 Let him not go. 别让他走。
Choose the correct answers.
1. __C______ play in the street. It’s very dangerous.
A. Do
B. Not
CDon’t
D. Doesn’t
2. Don’t __B_____ late again. A. are B. be C. is D. am
Read the sentences below.
1. If you want answers to all your questions about science, this is the right place for you.
2. If you want to fill a bag with sand, you have to control a kind of truck on wheels.
Have a good rest if you are tired. 如果累了,你就好好休息一下。
If you have time, please come with me. 如果你有时间,请跟我来。
Complete the sentences with the correct form of the words in brackets.
Look at the signs and write the rules.
Don’t touch.
No smoking.
No photos.
No entry.
What does each sign mean? Write the rules.
Don’t drink the water. No fire.
3. --- Sorry for being late again.
--- ___A____ here on time next time, or
you’ll be punished.
A. Be
B. Being
C. To be
D. Been
4. Please ____D____ because this is a
(2) 以动词原形开头,无时态和数的变化。 (3)祈使句的否定形式是在动词原形前加
don’t。
(4) 在表达请求时,可以加上please; 表达 比较强烈的语气时,可以用感叹号。
Please close the door. 请把门关上。 Sit down, please. 请坐。
Come to my office. 到我办公室来。 Stop! 停! Hurry up! 快点! Please don’t do it. 请不要这么做。
Complete the sentences.
turn on the computer
4. If you need to send an email, ______________.
Complete the sentences.
call 5. If you want to go, please ____________.
Watch your steps. 走路小心。
(警告)
No littering. 不要乱扔垃圾。
(禁止)
Don’t forget to take an umbrella.
不要忘了带雨伞。
(叮嘱)
祈使句的特点:
(1)祈使句一般没有主语,说话的对象都是第 二人称“你”或“你们”,所以也可以理 解为省略了主语you。祈使句末用句号或惊 叹号,句子读时用降调。
九年级英语(WY) 教学课件
Module 5 Museums
Unit 3
Unit 3 Language in use
Lead in
Translate the phrases into English.
谈论 不同于…
talk about be different from
也;还有
as well
(除...之外)也, 既...又 as well as
3. If the computer does not _s_ta_r_t_ (start) immediately, _w__a_it__ (wait) for one minute.
4. If the weather __g_e_t_s_ (get) colder, p__u_t_ (put) on warm clothes.
Don’t be late again. 不要再迟到了。
Don’t worry. Be happy. 不要担心,高兴点儿。
Don’t bring any food or drink into the lab next time. 下次不要把任何食物或饮料带到实验室来。
Don’t forget to turn off the lights. 不要忘记关灯。
Complete the sentences.
turn off the TV / change the channel
1. If you do not like the TV programme, ______________.
Complete the sentences.
ask the police for help
reading room.
A. quiet
B. to be quiet
C. to quiet
D. be quiet
Translate these sentences.
1. 咱们一起玩吧! Let’s play together. 2. 请不要迟到。 Don’t be late, please. 3. 回答这个问题。 Answer the question. 4. 不要这么吵。 Don't be so noisy. / Don’t make so much noise.
3. If you compare the medicine of the past with the medicine of today, you will feel very lucky next time you visit a doctor!
这是“if 从句+祈使句”的句子结构, if 从句用一般现 在时态。 if引导的条件句既可以放在句子前, 也可 以放在句子后。 从句位于主句之前时, 常用逗号将其与主句隔开。
6. _L__o_o_k__ (look) out! A car is coming. 7. __G_i_v_e__ (give) us ten years and just see
what our country will be like. 8. _D_o_n_’_t_l_et__ (not, let) the baby cry.
发现;找出来
find out
用…装满…
fill … with …
把…跟…比较
compare … with …
自由地去做某事 be free to do sth.
确保;一定
make sure
I
What do they mean?
“禁止做某事”的句型总结
(1)No + v.-ing!
No talking! (2)否定祈使句。
No parking.
No food and drinks.
Practice
Fill in the blanks.
1. It’s an important meeting. _D_o_n_’_t_b_e__ (not, be) late.
2. _D_o_n_’_t_m__a_k_e_ (not, make) any noise! Your mother is sleeping.
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