人教版九年級英語下冊《It must belong to Carla》SectionA PPT課件(第3課時)，共18頁。
Grammar Focus
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.
Complete these responses.
1.A:Many people are wearing coats.
B:The weather must be_________________________________.
2.A:Sally has been coughing a lot.
B:She might be_______________________________________.
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____________________________________________.
Language Points
1.I hear water running in the bathroom.我聽到浴室里水在流淌。
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to）、動詞-ing形式或賓語從句。
e.g.:I can hear someone knocking at the door.
She couldn't hear what I said.
【辨析】hear sb. doing sth.與hear sb. do sth.
hear sb. doing sth.意為“聽到某人正在做某事”，強調聽見的動作正在進行。
e.g.:I heard him singing when I walked past the shop.
hear sb. do sth.意為“聽到某人做了某事”，強調聽見的動作發生的全過程，表示此動作經常發生或動作已經完成。
e.g.:I often hear her sing in the evening.
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。
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.
語法拓展
情態動詞表示推測的用法
一、表示不同時態的推測結構。
“情態動詞+do sth.”表示對現在事情的推測；“情態動詞+be doing sth.”表示對正在發生的事情的推測；“情態動詞+have done sth.”表示對過去或已完成事情的推測。
e.g.:He may have watched TV last night.
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”，后接動詞原形，表示對現在的推測。
e.g.:You must be exhausted.
2.may用在肯定句中，表示對現在把握不大的推測，意為“也許，可能”。
e.g.:It may be a new invention.
3.could,might也表示推測，常用在過去時中；但在某種巧合下，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.
4.can用于肯定句中，表示理論上的可能性。
e.g.:Smoking can cause cancer.
Exercise
一、單項選擇。
( )1.—You_______be happy with the strong public support we've received.
—Yes,you are right.I'm really excited.
A.may B.can C.must D.need
( )2.—Oh,he_______be Li Ming.I know him well.
—No,it_______be him.He's gone to Beijing for a meeting.
A.can;doesn't have to B.must;can't
C.need;mustn't D.may;may not
( )3.My mother_______be at home,so you can go to see her.
A.can't B.might C.may not D.needn't
( )4.It must be your brother________a song.
A.to sing B.sing
C.singing D.sang
二、根據漢語意思完成句子，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。
This basketball__________ __________Bob's or Peter's.
Homework
Recite Grammar Focus and make sentences using modal verbs. (at least 5 sentences)
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