period 3 section a grammar focus-4c
知识与能力目标】
1)学习掌握下列词汇：laboratory, coat, sleepy, pocket
2）进行一步复习巩固学习section a部分所学的生词和词组。
3）掌握情态动词的用法和物体所属的句型。
过程与方法目标】
以任务型教学策略为主，采用情景教学法（如本单元新知识推导时）、听力训练法（处理听力材料）、并辅助个人和**等兴趣策略教学。采取任务型教学策略的目的是主要是让学生多练多用，在做中学、学中乐、乐中掌握。
情感态度价值观目标】
面对身边暂时不可解释的现象，根据已有证据进行合理推测。不信谣，不传谣。
教学重点】1)复习巩固section a部分所学的生词和词组，达到熟练运用的目标。
2)总结情态动词的用法。
教学难点】1)学习运用情态动词的用法。
2)掌握物体所属的句型。
教学步骤】step 1. revision
review some main phrases and sentences we learned in the last class.
step 2. grammar focus
fill in the blanks.
1.这是谁的排球is this?
这一定是卡拉的。她热爱排球运动。itbe __she loves volleyball.
2.这是谁的发带is this?
它可能是梅的发带。或者可能属于琳达。她们两人都是长头发。
it __be mei’s hair band. or it __belong to linda. they___h**e long hair.
3.那晚你看见了什么？__did you see that night?
我不确定，但肯定不可能是狗。它更大。我想也许是一头熊或一匹狼。
i'mbut ita dog.
it was bigger. i think ita bear or a wolf.
step 3. try to find
情态动词表推测，可能性：must> can/could> may/might
一、must
表示可能性最大的肯定推测，意思是“一定、准是”。只能用于肯定句。如果要表示“一定不”，应该用can't。如果询问可能性时，应该用can。
he must know the answers.他肯定知道答案。
he can't know the answers.他肯定不知道答案。
can he know the answer?
他知道答案吗？
二、can/could
can表示推测“可能性”时，一般用于否定句或疑问句。can在疑问句中意思是“会，可能”。
he can’t pick her schoolbag up.他不可能拿了她的书包。
could用于表示某事有可能发生或可能是事实。
don’t eat it. it could go bad.
不要吃它，可能坏了。
the plane could be put off by the storm.这趟飞机可能会因为暴风雨而推迟。
could可用于表示客气、礼貌、委婉的请求语气。
could you please help me with my homework？你能帮我完成我的家庭作业吗？
三、may/might
may, might表示推测“可能性”时，意思是“可能”，“也许”。might不表示过去时态，语气更委婉，可能性更小。may, might表推测时，可用于否定句，但不用于疑问句。
he may/ might not be at home, but i'm not sure.他可能不在家，不过我也不确定。
四、推测时态。
1. must:推测现在/正在/过去发生的动作。
he must h**e a car now.(现在)他一定有一辆小汽车。
he must be finishing his homework at home.正在进行)他一定在家做作业。
he must h**e finished the work.(过去)他一定已完成了工作。
can’t后可接进行时/完成时，表示对现在发生的动作或过去发生的动作进行推测。
they can’t be reading in the library.他们一定不在图书馆读书。
he can’t h**e gone to shanghai because i saw him just now.他不可能去了上海，我刚看见他了。
可以推测现在正在发生的动作或过去发生的动作，还可以推测将来的情况。
he may/might be sleeping now.(现在)他可能正在睡觉。
these people may/might h**e seen the film before.(过去)这些人以前可能看过这部电影。
it may rain. there are some clouds. (将来)可能会下雨。因为有一些乌云。
step 4. exercises
choose the correct answer.
1. —excuse me. is this the right way to the summer palace?
sorry, i am not sure. itbe.
a. might
b. will
c. must
d. can
2. —isn’t that ann’s husband over there?
no, it __be him—i’m sure he doesn’t wear glasses.
a.can’t
b. must not
c. won’t
d. may not
3. you __be tired—you’ve only been working for an hour.
a. must not
b. won’t
c. can’t
d. may not
4. —is john coming by train?
he should, but henot. he likes driving his car.
a. must
b. can
c. need
d. may
step 5. practice
work on 4a. choose the best way to complete each sentence using the words in brackets.
1.让学生们理解句子意思。
1) a: where’s jean?
b: i’m not sure. she __is/ might be/ must be) in the laboratory.
2) a: everyone is going to the pool after school.
b: really? itmust be / can’t be /could be ) hot outdoors.
3) a: that’s the phone.
b: hmm. i wonder who itmust be / could be / should be).
4)a: i wonder if there are jim’s glasses.
b: theycan’t be / might be / could be) his. he doesn’t wear glasses.
5)a: i hear water running in the bathroom.
b: itcould be / must be / can’t be) carla. she was thinking of taking a shower.
2.根据句意选择正确的情态动词。
3.最后，通读一遍句子，进行综合理解，看句子内容是否通顺，合理。
4. check the answers with the ss.
keys: might be, must be, could be, can’t be, must be
5. explanation.
1) be sure (of/about sth/doing)确信。对。有把握。
be sure to do sth “必定”，“必然会”, 准会"
2)表示“位移”的动词用现在进行时态表将来，例如：go去，come来，le**e离开，arrive到达，return回来，fly飞。
3) wonder
v. “想知道”（want to know）
no wonder +句子。
难怪。no wonder you are angry.难怪你觉得生气。
4) think of
想要；打算。
i thought of playing basketball.我想打篮球。
work on 4b. complete these responses.
1. tell ss to understand the sentences.
1) a: many people are wearing the weather must be __
2)a: sally has been coughing a she might be __
3)a: this restaurant is always very the food
4)a: whenever i try to read this book, i feel sleepy.
b: it can’t
2. let ss write down possible answers as much as possible.
3. let ss check their answers with their partners.
4. check the answers together.
keys: cold, sick/ ill, must be delicious, be interesting/ attractive
5. language points:
sleep, sleepy & asleep
sleep, sleepy和asleep这三个词都与“睡觉”有关，但它们的含义和用法有区别。
单词。词性。
含义。用法。
例句。sleep
名词。睡眠。
不可数名词。
just lie down and get enough sleep.
一次睡眠；一段睡眠时间。
前可加a i’ll go upstairs and h**e a sleep.
动词。睡觉；睡。
不及物动词。
did you sleep well last night?
sleepy
形容词。困倦的；瞌睡的。
既能作定语，也能作表语。
do you know the sleepy girl?
i’m too sleepy to finish my report.
asleep
形容词。睡着的。
通常作表语；常和be或fall搭配使用。
if i am asleep on the bus, please wake me up when you get off the bus.
运用】根据句意，选用sleep, sleepy或asleep填空，有的需要变换形式。
1) iat my sister’s house last week.
2) bill was very tired, so he fellsoon.
3) the heat in the house made her
4) i must get somei’m too tired.
step 6. group work
look at this picture of a room. how much can you tell about the person who lives here? is it a boy or a girl?
whatare his/ her hobbies? discuss your ideas with a partner.
a：it could be a girl's room because it's very tidy.
b：i guess so. but it might be a boy's room because the clothes look like boys' clothes.
a：it could/ might/ can't be...
because...
b：i guess so/ i don’t think so. but it might/ could/ must be ..
because ..
step 7. homework
remember the grammar.
finish the exercise in 4c.
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