冀教版九年级全一册 活学活用 must 课件(共15张PPT)

(共15张PPT)
活学活用 must
n
Strengthening Epidemic Prevention and Control
We must wash hands more often.
We must pay attention to hygiene.
We must open the windows more often. We must wear the maks.
We must take the temperature
at the school gate.
—Need we take the temperature
before entering the classroom
—Yes, we must, again.
Looking back
We ____ walk on our own way to
the classroom.
We ______ do it on the other way.
must
mustn't
must
They _____ be in the diffrent classes.
Looking back
must 表示主观看法，意为“必须，应该，一定”。
课本原句再现
1)表示必须。例如:
Every word must have power and meaning. (Lesson 19)
we must keep a safe distance.
2)在否定句中表示不许。例如:
Cars mustn't be parted here. (Page 185)
We mustn't go swimming alone.
3)表示推测，用在肯定句中，意为“一定”，“准是”。例如: It must be the king's musicians passing by. (Lesson 22)
It must be dangerous by the river.
1）回答带有must的一般疑问句时，否定回答常用need not，而不用must not。例如：
—Must the students tell their parents where they will go
—Yes, they must. (No, they needn't)
2）回答带有need的一般疑问句时，肯定回答一般用must 。例如：
—Need the students tell their parents who they will go with and when they will come back
—Yes, they must. (No, they needn't)
注 意
Safety must come first
歌曲：危险的地方我不去
We must be away from
the ponds or rivers
We must keep safety in mind
We mustn't go to
the dangerous places
Practice
We mustn't···
We must cherish lives
and prevent drowning
We must strengthen epidemic prevention and control.
It must be quite urgent for us to prevent drowning.
Thank you
Best wishes