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(共18張PPT)
Unit 8 It must belong to Carla.
The Third Period
Section A(Grammar Focus—4c)
A: What is it
B: It must be _________.
It could/might be _________.
It can’t be _________.
a vase
two faces
a dog
Whose volleyball is this It must be Carla’s. She loves volleyball.
Whose hair band is this It could be Mei’s hair band. Or it might belong to Linda. They both have long hair.
What did you see that night I’m not sure, but it can’t be a dog. It was bigger. I think it might be a bear or a wolf.
Grammar
Focus
1. —_________ __________ is this 這是誰的排球？
—It _________ _________ Carla’s. She loves _________. 它一
定是卡拉的。她很喜歡排球。
2. —_________ hair band is this 這是誰的發(fā)帶？
—It _________ _______ Mei’s hair band. Or it _________
_________ ______ Linda. They both have long hair. 它可能是
梅的發(fā)帶。或者可能屬于琳達。她們兩人都是長頭發(fā)。
3. —_________ did you see that night 那晚你看見了什么？
—I’m not sure, but it ________ ______ a dog. It was bigger.
I think it ________ ______ a bear or a wolf. 我不確定，但
不可能是狗。它更大一點。我想它也許是一只熊或一匹狼。
Whose volleyball
must be
volleyball
Whose
could be
might
belong to
What
can’t be
might be
Complete the sentences.
情態(tài)動詞表推測
一、表示不同時態(tài)的推測的結(jié)構(gòu)
“情態(tài)動詞+do sth.”表示對現(xiàn)在發(fā)生的事情的推測；“情態(tài)動詞+be doing sth.”表示對正在發(fā)生的事情的推測；“情態(tài)動詞+have done sth.”表示對過去或已完成的事情的推測。
e.g. He may have watched TV last night. 昨晚他可能看電視了。（表示對過去的推測）
語法拓展：
二、肯定推測
1. must 用于肯定句，表示較有把握的推測，意為“準是，一定”，后面接動詞原形，表示對現(xiàn)在的推測。
e.g. You must be exhausted. 你一定筋疲力盡了。
2. may 用在肯定句中，表示對現(xiàn)在把握不大的推測，意為“也許,可能”。
e.g. It may be a new invention. 它可能是一個新發(fā)明。
3. could, might 也可表示推測，常用于過去時中,但在某些場合下，為了使語氣更緩和、更委婉，常用could/might代替can, may。
e.g. They saw something in the sky last night. It could/might be a UFO.
昨天晚上他們看見空中有個東西。它有可能是不明飛行物。
三、否定推測
1. 表否定推測時，can’t/couldn’t 語氣最強，指“不可能”，帶有驚異、懷疑的感彩。
e.g. The story sounds interesting,but it can’t be true. 這個故事聽起來很
有趣，但它不可能是真的。
2. 語氣不很肯定時，常用 may not 或 might not 表否定推測，意為“可能不，也許不”。
e.g. He may/might not be at home. 他可能不在家。
四、疑問句中的推測
疑問句中的推測，常用 can 或 could，意為“可能”。
e.g. Who can it be Can it be Jenny 那可能是誰呢？是珍妮嗎？
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 It __________(must be/can’t be/could be) hot outdoors.
3.A: That’s the phone.
B: Hmm. I wonder who it __________ (must be/could be/should be).
might be
must be
could be
Choose the best way to complete each sentence using the words in brackets.
4a
4. A: I wonder if these are Jim’s glasses.
B: They ____________ (can’t be/might be/could be) his. He doesn’t
wear glasses.
5. A: I hear water running in the bathroom.
B: It ______________ (could be/must be/can’t be) Carla. She was
thinking of taking a shower.
can’t be
must be
1. A: Many people are wearing coats.
B: The weather must be _______________________________.
2. A: Sally has been lying in bed all day.
B: She might _____________________________________.
3. A: This restaurant is always very crowded.
B: The food ________________________________________.
4. A: Whenever I try to read this book, I feel sleepy.
B: It can’t __________________________________________.
very cold
have a bad cold
must be delicious
be that boring
Complete these responses.
4b
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.
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 What are his/her hobbies Discuss your ideas with a partner.
4c
1. I hear water running in the bathroom. 我聽到浴室里水在流淌。
（教材第60頁）
hear 此處作及物動詞，意為“聽見；聽說”，后可跟名詞、代詞、動詞不定式（省略to）、動詞 -ing 形式或賓語從句。
e.g. I can hear someone knocking at the door. 我能聽到有人正在敲門。
She couldn’t hear what I said. 她沒有能聽到我說了些什么。
Language Points
【拓展】辨析 hear sb. doing sth. 與 hear sb. do sth.
hear sb. doing sth. “聽到某人正在做某事”，強調(diào)聽見的動作正在進行 I heard him singing when I walked past the shop. 我走過那家商店時，聽見他正在唱歌。
hear sb. do sth. “聽見某人做了某事”，強調(diào)聽見的動作發(fā)生的全過程，表示此動作經(jīng)常發(fā)生或動作已經(jīng)完成 I often hear her sing in the evening. 我經(jīng)常聽見她在
晚上唱歌。
2. Whenever I try to read this book, I feel sleepy. 每當我試圖去讀這
本書時，我都感覺困。（教材第60頁）
sleepy adj. 困倦的，瞌睡的，常與 be/feel 連用。
【拓展】sleep v.&n. 入睡，睡覺；asleep adj. 入睡的，睡著的，常與 fall 連用。
e.g. He feels sleepy and he will fall asleep soon.他很困，他馬上就會
睡著的。
一、從方框中選擇合適的詞填空
1. —You _______ be happy with the strong public support we’ve
received.
—Yes, you are right. I’m really excited.
2. —Look! Li Ming is over there.
—No, it _______ be him. He has gone to Beijing for a meeting. 3. My mother _______ be at home,so you can go to see her.
Exercise
must
can’t
may must can’t
might
二、根據(jù)漢語意思完成句子，每空一詞
1. 她不可能正在等你。
She __________ __________ __________for you.
2. 這肯定是李明的英語書。
This English book __________ __________ _______ Li Ming.
3. 這個籃球可能是鮑勃或彼得的，但是我不確定。
This basketball ________ ________ Bob’s or Peter’s, but I’m
not sure.
can’t
be
waiting
must
belong
to
might
be
4. 她的表準是停了。我去叫她。
Her watch __________ __________ __________. I will
go and call her.
5. 一定有人在偷蘋果。
There __________ ________ somebody ________ apples.
must
have
stopped
must
be
stealing
Recite Grammar Focus and make sentences using modal verbs. (at least 5 sentences)
Homework

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