2026年海南省中考英语二轮复习语法突破课件：情态动词(共18张PPT)

(共18张PPT)
　情态动词
中考考点讲练
考点1
情态动词的基本用法(5年4考)
情态动词有词义，但不能单独作谓语，必须和动词原形一起构成谓
语。除have to外，情态动词一般无人称和数的变化，后接动词原形。
考点 含义及用法 例句
can (1)表能力，意为“能，会”，可与be able to相互转化，can’t意为“不能，不会”，为can的否定形式 He can play the guitar.
(2)表请求，意为“可以”，多用于口语 Mr Zhang， can I talk to you about my study plan？
(3)表允许，意为“可以” You can park here.
考点 含义及用法 例句
could (1)表能力： ①意为“能，会”，can的过去式，表示过去的能力 ②couldn’t意为“不能，不会”，为could的否定形式 The clever girl could read by herself when she was three.He helped me with the problems that I couldn’t work out.
(2)表请求：could在疑问句中表示委婉的请求 肯定回答：Yes./Sure./Certainly./Of course. /No problem./With pleasure. 否定回答：Sorry， I’m afraid not./Sorry， I can’t./I’d love/like to， but… Could you please help
me with my English？
考点 含义及用法 例句
must 表必须和应当，意为“必须，一定要”。由must引出的一般疑问句，肯定回答常用“Yes，主语＋must.”；否定回答常用“No，主语＋needn’t/don’t/doesn’t have to.”，不能用mustn’t来回答 【拓展】mustn’t为must的否定形式，意为“一定不要，禁止” We must take action to protect the wild animals.
考点 含义及用法 例句
may (1)表请求，意为“可以”，比can/could更正式，其过去式为might May I come in？
(2)表允许 You may come if you wish.
(3)表祝愿，用于祈使句，用法和wish相似 May your dream come true！
might 表请求，语气比may更委婉 Might I ask you a question？
考点 含义及用法 例句
need 表必要性和需要，意为“需要”，主要用
于否定句和疑问句中。肯定答语用“主语
＋must.”或“主语＋have/has to.”， 否
定答语用“主语＋needn’t.”或“主语＋
don’t/doesn’t have to.” 【拓展】needn’t为need的否定形式，意为
“没必要” —Need I come
tomorrow？
—Yes， you must/have
to./No，you needn’t/ don’t have to.
考点 含义及用法 例句
should (1)表建议或劝告，意为“应该” We should develop
good eating habits.
(2)表征询建议，常用于疑问句中 When should we begin
our discussion？
(3)表示要求，用于第三人称，意为“必
须，应该” Students should wear
uniforms at school.
考点 含义及用法 例句
shall (1)表请求或征求对方建议，多用于第一人称，构成疑问句 Shall I turn on the lights？
(2)表决心、警告和命令，多用于第二、三人称 You shall not bring your
mobile phone to the classroom during the exam.
考点 含义及用法 例句
will (1)表意愿或请求，will用于疑问句，常用于第二人称，won’t为will的否定形式 Will you give me some
advice？
(2)would为will的过去式，表示自愿做或主动提出做某事 Mary said she would go
with me.
had better 表建议，意为“最好”，多用于第二人称，否定形式为had better not You had better be quiet
in the library.
have to 表必须，意为“不得不”，多表示客观需要，否定形式为don’t have to I have to be off now.My mom is waiting for me.
活学巧练
单项选择
1. (2025·海南29题)—Do you think we go to the same high school？
—I hope so.
A. must B. may C. should
2. (2024·海南25题)— I go out with my friend now，Dad？
—I’m afraid you have to finish your homework first.
A. Can B. Should C. Must
B　
A　
3. (2023·海南30题)Mary， you clean the windows now. Your brother
has cleaned them.
A. can’t B. needn’t C. mustn’t
B　
4. (2021·海南31题)—How long can I keep these books？
—According to the library rules， you return them within 7 days.
A. must B. might C. could
5. (2025·白银改编) you turn down the TV， please？I’m trying to
work.
A. Could B. Must C. Might
A　
A　
6. (2025·扬州改编)—Will you be able to finish the work in time？
—I promise anything， but I’ll do my best.
A. can’t B. shouldn’t C. couldn’t
A　
考点2
情态动词表推测(2022.30)
考点 含义及用法 例　句
must 表示非常有把握的肯定推测，意为
“一定，肯定”(100％的可能性) She must be tired after a very long journey.
could 表推测，意为“有可能，也许”(20％～80％的可能性)，语气缓和、较委婉 They could forget to invite you.
考点 含义及用法 例　句
may 表推测，意为“有可能，也许”，用于肯定句，表示把握不大的推测 He may know the answer.
might 表推测，意为“有可能，也许”，可能性比may小，语气缓和、较委婉 He might be right.
考点 含义及用法 例　句
can’t can’t为can的否定形式，表示否定
推测，语气强烈，意为“一定不，
不可能”，可能性几乎为零 That can’t be Jane. I saw her in
the library just now.
【总结】表肯定推测：must(100％)＞could/may(20％～80％)＞might
表否定推测：can’t＞may not＞might not
活学巧练
单项选择
1. (2022·海南30题)The boy be Tom. I saw him reading in the library
just now.
A. shouldn’t B. can’t C. needn’t
2. (2025·绥化)He know the secret.I haven’t told anyone about it.
A. can’t B. needn’t C. mustn’t
3. —You be very tired after finishing all of those hard jobs.
—Yes.I’ll take a good rest and make myself comfortable.
A. may B. may not C. must
B　
A　
C　
4. It be the only way to solve the problem.There are other choices.
A. may not B. mustn’t C. need
5. —Whose dictionary is this？
—It be Sarah’s.Look！Her name is on it.
A. must B. mustn’t C. need
A　
A