人教版九年级英语下册《It must belong to Carla》SectionA PPT课件(第3课时)，共18页。
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.我听到浴室里水在流淌。
hear此处作及物动词，意为“听见，听说”，后可跟名词、代词、动词不定式（省to）、动词-ing形式或宾语从句。
e.g.:I can hear someone knocking at the door.
She couldn't hear what I said.
【辨析】hear sb. doing sth.与hear sb. do sth.
hear sb. doing sth.意为“听到某人正在做某事”，强调听见的动作正在进行。
e.g.:I heard him singing when I walked past the shop.
hear sb. do sth.意为“听到某人做了某事”，强调听见的动作发生的全过程，表示此动作经常发生或动作已经完成。
e.g.:I often hear her sing in the evening.
2.Whenever I try to read this book,I feel sleepy.每当我试图去读这本书时，我都感觉困。
sleepy adj.困倦的，瞌睡的，常与be/feel连用。
【拓展】sleep v.&n.入睡，睡觉；
asleep adj.入睡的，睡着的，常与fall连用。
e.g.:He feels sleepy and he will fall asleep soon.
语法拓展
情态动词表示推测的用法
一、表示不同时态的推测结构。
“情态动词+do sth.”表示对现在事情的推测；“情态动词+be doing sth.”表示对正在发生的事情的推测；“情态动词+have done sth.”表示对过去或已完成事情的推测。
e.g.:He may have watched TV last night.
二、肯定推测。
1.must用于肯定句，表示较有把握的推测，意为“准是，一定”，后接动词原形，表示对现在的推测。
e.g.:You must be exhausted.
2.may用在肯定句中，表示对现在把握不大的推测，意为“也许，可能”。
e.g.:It may be a new invention.
3.could,might也表示推测，常用在过去时中；但在某种巧合下，为了使语气更缓和、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，表示理论上的可能性。
e.g.:Smoking can cause cancer.
Exercise
一、单项选择。
( )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、根据汉语意思完成句子，每空一词。
1.她不可能正在等你。
She__________ __________ __________for you.
2.这肯定是李明的英语书。
This English book__________ __________ __________Li Ming.
3.这个篮球可能是鲍勃或彼得的。
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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