What must she do?
Open the window. Air the room.
Lesson 30 What must I do?
我应该做什么？
empty v.倒空,使…变空 read v.读
sharpen v.削尖，使锋利 put on 穿上 take off 脱掉
turn on 开
二 将下列句子变为否定句。
• 1.Put the clothes in the wardrobe. Don’t _____the put wardrobe _____ clothes in the ______. • 2.Dust the dressing table. Don’t _____ dust _____ the dressing table. ______ • e upstairs and see it. Don’t come upstairs and see it ________________________________ • 4.Give me a book. Don’t give me a book. _____________________________
n.灰尘
6. sweep [swi:p]v. 扫 扫地 sweep the floor
1）肯定句
2）否定句：主语+mustn’t+动词原形 你不应该关门。 You mustn’t shut the door.
一般疑问句：Must+主语+动词原形
我应该关门吗？
Must I shut the door? 肯定回答： Yes, you must. 否定回答： No, you needn’t.
Practice2
What must you do?
Make the bed
What must you do?
Sweep the floor.
What must you do?
Put the clothes in the wardrobe.
What must you do?
Dust the dressing table.
5
open ____________ the window sweep ______________ the floor
make _____________the bed
shut ___________the door air ___________ the room
___________the dressing table
4. Are those clothes in the wardrobe?
No, they aren’t.
5. Is the dressing table dirty?
Yes, it is.
6. Is the floor clean?
No, it isn’t.
7. Is the door open?
三、选择题。
• • • • • •
• • • • •
( C)1.The door is open. You must ____ it. A. open B. opens C. shut D. shuts (B )2.Don’t put on this watch. ______. A.Take off it B.Take it off C.Put it on D.Put on it (A )3.That’s ____ nice car and ____colour is nice,too. A.a , its B.a , it’s C.one , it D.an , its (A )4.What must Amy ____? A.do B.does C.doing D.to do ( B)5.Give your book ____ him, please. A.in B.to C.at D.on
祈使句的否定句式
肯定祈使句如何变成否定祈使句：在动词原形前 加don’t： Don’t sleep. 不要睡觉。 Don’t eat. 不准吃。 不要说话。 Don’t talk. 不要开窗。 Don’t open the window. 不要坐下。 Don’t sit down.
注：Please可用于祈使句的句首(其后通常不 用逗号)或句末(其前通常用逗号)。 Please don’t run . 请不要跑。 Don’t drive fast, please. 请开得慢一点。
1. shut = close
[ʃʌt] v. 关 V.关
shut / close the door 关门
2. air [eə] v. 给...通风 air the room 给房间通风 open the window and air the room 开窗给房间通风 air n. 空气 干净的空气 clean air
3. tidy ['taɪdɪ] adj. 整齐的，干净的 这间卧室很整洁。 This bedroom is tidy.
untidy adj. 乱，不整齐
un-前缀，表示否定 这间卧室不整齐。 This bedroom is untidy.
tidy--untidy happy开心的--unhappy lucky幸运的--unlucky kind友好的--unkind
四、 用所给词的正确形式填空
• 1. You must sharpen _____(sharp) these knives. They are very blunt. empty • 2.The box is full. Please _____(empty) it. Do not _____(clean) clean • 3._____ the refrigerator. • 4.This bedroom is not clean. It is very _____(tidy). untidy. Whose • 5.______(who) chairs are near the table? children • 6.Give those _________( child) these ice creams. • 7.Are your friends ________ tourists ( tourist)? housewives • 8.How are those________(housewife)? these • 9.Are ________ (this) black umbrellas？ • 10.Is this shirt ________( Tim)? Tim’s
untidy
This bedroom's very untidy.
What must I do?
1
Open the window and air the room
2
put the clothes in the wardrobe
3
make the bed
4
dust the dressing table
What must I do?
floor
Sweep the
{
kitchen
What must I do?
Clean the
{
car
window
What must I do?
Dust the
{
dressing table
shelves
What must I do?
Empty the
{
cup
bottle
dust
put __________the clothes in the wardrobe
Practice1
1. 2. 3. 4. 5. 6.
smell 发臭 should 应该 dusty 布满灰尘的 all over 到处都是 go shopping 外出购物
open the window and air the room If the room smells, you should ___________________. sweep the floor If the floor is very untidy, you should _______________. put them in the wardrobe If the clothes are all over the table, you should_______. make the bed If the bed is very untidy， you should______________. shut If you are going to go shopping, you should________ the door. dust the dressing table If the dressing table is very dusty, you should_______.
特殊疑问句：疑问词+must+主语+动词原形
对sdo?
练一练：
他应该做什么？
What must he do? 他应该开窗给房间通风。 He must open the window and air the room.
他们应该干什么？
What must they do? 他们应该把衣服放到橱柜里。 They must put the clothes in the wardrobe.
No, it isn’t.
MRS. JONES: Come in, Amy. MRS. JONES: Shut the door, please. MRS. JONES: This bedroom's very untidy. MAY: What must I do, Mrs. Jones? MRS. JONES: Open the window and air the room. MRS. JONES: Then put these clothes in the wardrobe. MRS. JONES: Then make the bed. MRS. JONES: Dust the dressing table. MRS. JONES: Then sweep the floor.