九年级英语情态动词PPT教学课件
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They ______ go to work that day.(not need) doesn’t need
The boy ________ any help.(not need) 没有必要 needn’t =don’t need to=don’t have to May…? No, sb. can’t/may not/mustn’t.
I can sing English songs. Can you sing English songs?
I could sing English songs at the age of five.
注１．意B：e cabalne t和o 可be用a于b各le种to时态的区别
We have been able to talk in English.
2. 表示许可
Can I take a seat here?
自 强
May I take a seat here?
而
Could I borrow your bicycle? 弱
肯定回答
否定Fra Baidu bibliotek答
Can? Yes, you can.
No, you can’t.
May? Yes, you may/can. No, you mustn’t/can’t/may not.
Must…? No, sb. needn’t/don’t have to.
Need…? Yes, sb. must. No, sb. needn’t.
6. 表示责任 should, ought to (应该)
You had better work hard at all your subjects. =You __s_h_o_u_l_dwork hard at all your subjects.=You _o_u_g_h_t __to____ work hard at all you subjects.
He might come this afternoon. I’m not sure. 比may的语气
４. 表示必须
must
更不肯定
You must say sorry to your teacher.
You mustn’t smoke here.
Must we finish homework now? Yes, you must./No, you
情态动词＋现在完成时
Could 和might 的用法
（１）．是can和may的过去时
（２）. 特殊性
语气委婉，
从句不进级
Could you tell me whether they will come here tomorrow?
He may arrive soon. Let’s set the table.
shouldn’t, oughtn’t to
7. Would作为情态动词，多于请求。 Will/Would you please sing us a song?
Would you like a cup of tea?
Would you like to join us for dinner?
Would you mind our having a party in this room?=Would you mind if we have a party in this room?
I would like to do / I would prefer to do / I would rather do / I would be interested to do
They will soon be able to talk in English. 2. was/were able to 表示过去一次性设法作成某事． The man was able to run away.=The m反an意m_词_a_：n_af_ag_ie_ld_to_d_too_____ run away. =The man _s_u_c_c_e_e_d_e_d _in____ running awy.
needn’t=No, you don’t have to. Must规章制度
Must和have to do 的区别
Have to客观条件逼迫
My mother is ill. I have to look after her at home.
It is raining hard. We have to take a taxi.
…don’t we?
5.need 的用法
Need作情态动词时，多用于否定或疑问结构，一般不用 于肯定句，表示“必要”。
need用作一般实义动词，根据需要作动词变形。 He _n_e_e_d_s_ money now. (need)
_D_o_e_s__ she _n_e_e_d__ to bring the book here? (need) needn’t/didn’t need to
情态动词
情态动词:情态动词本身有一定的含义,但不能单独作为句 子的谓语,必须后面紧跟动词原形(除ought). 情态动词没
有人称和数的变化． 初中阶段我们主要掌握：can(could), may(might), must,
need, would, should, ought等． １．表示能力 can/could (现在时／过去时）
Could? Sure./OK./… I’m afraid you couldn’t. Because…
3. 表示猜测
May be (可能是） must be (一定是) Mustn’t be (不一定是） can’t be (一定不是）
表示对过去的推测
Look, the light is off in the room. Danny must have got to bed. (must be in bed)
The boy ________ any help.(not need) 没有必要 needn’t =don’t need to=don’t have to May…? No, sb. can’t/may not/mustn’t.
I can sing English songs. Can you sing English songs?
I could sing English songs at the age of five.
注１．意B：e cabalne t和o 可be用a于b各le种to时态的区别
We have been able to talk in English.
2. 表示许可
Can I take a seat here?
自 强
May I take a seat here?
而
Could I borrow your bicycle? 弱
肯定回答
否定Fra Baidu bibliotek答
Can? Yes, you can.
No, you can’t.
May? Yes, you may/can. No, you mustn’t/can’t/may not.
Must…? No, sb. needn’t/don’t have to.
Need…? Yes, sb. must. No, sb. needn’t.
6. 表示责任 should, ought to (应该)
You had better work hard at all your subjects. =You __s_h_o_u_l_dwork hard at all your subjects.=You _o_u_g_h_t __to____ work hard at all you subjects.
He might come this afternoon. I’m not sure. 比may的语气
４. 表示必须
must
更不肯定
You must say sorry to your teacher.
You mustn’t smoke here.
Must we finish homework now? Yes, you must./No, you
情态动词＋现在完成时
Could 和might 的用法
（１）．是can和may的过去时
（２）. 特殊性
语气委婉，
从句不进级
Could you tell me whether they will come here tomorrow?
He may arrive soon. Let’s set the table.
shouldn’t, oughtn’t to
7. Would作为情态动词，多于请求。 Will/Would you please sing us a song?
Would you like a cup of tea?
Would you like to join us for dinner?
Would you mind our having a party in this room?=Would you mind if we have a party in this room?
I would like to do / I would prefer to do / I would rather do / I would be interested to do
They will soon be able to talk in English. 2. was/were able to 表示过去一次性设法作成某事． The man was able to run away.=The m反an意m_词_a_：n_af_ag_ie_ld_to_d_too_____ run away. =The man _s_u_c_c_e_e_d_e_d _in____ running awy.
needn’t=No, you don’t have to. Must规章制度
Must和have to do 的区别
Have to客观条件逼迫
My mother is ill. I have to look after her at home.
It is raining hard. We have to take a taxi.
…don’t we?
5.need 的用法
Need作情态动词时，多用于否定或疑问结构，一般不用 于肯定句，表示“必要”。
need用作一般实义动词，根据需要作动词变形。 He _n_e_e_d_s_ money now. (need)
_D_o_e_s__ she _n_e_e_d__ to bring the book here? (need) needn’t/didn’t need to
情态动词
情态动词:情态动词本身有一定的含义,但不能单独作为句 子的谓语,必须后面紧跟动词原形(除ought). 情态动词没
有人称和数的变化． 初中阶段我们主要掌握：can(could), may(might), must,
need, would, should, ought等． １．表示能力 can/could (现在时／过去时）
Could? Sure./OK./… I’m afraid you couldn’t. Because…
3. 表示猜测
May be (可能是） must be (一定是) Mustn’t be (不一定是） can’t be (一定不是）
表示对过去的推测
Look, the light is off in the room. Danny must have got to bed. (must be in bed)