《Language in use》Museums PPT课件下载(第1课时)

外研版九年级英语上册《Language in use》Museums PPT课件下载(第1课时)，共26页。

Read the sentences:

No shouting, please!

Don't cross that rope!

Don't be rude!

If you ever go to London, make sure you visit the Science Museum.

Read and understand the red words:

Don't touch.

No photos.

No entry.

No smoking.

No shouting.

If you want to fill a bag with sand, control a kind of truck on wheels and move it into the correct place.

Fill in the blanks:

1. If you ________ (want) to get good grades, _______(study) harder.

2. If it _____ (get) colder, _____ (put) on more warm clothes.

3. If you ______ (want) to know the way, _____ (ask) the policeman.

4.If you _____ (visit) London, _____ (take) a boat trip on the river.

5. If the machine _____________ (not work), ______ (buy) a new one, please.

Grammar

1. No + v. -ing/ n.! 禁止做……

eg. No talking!

No photos!

2. 否定祈使句: Don't + v. 不能做……

eg. Don ’t talk.

Don't take photos.

3. mustn't + v. 禁止

eg. You mustn ’t talk.

You mustn't take photos.

4. can't + v. 不允许

eg.You can ’t talk.

You can't take photos.

5. You aren ’t allowed to + v. 不允许对方做某事

eg.You aren ’t allowed to talk.

You aren't allowed to take photos.

if从句+祈使句，表达建议，相当于汉语的“如果……，就……”。if引导的从句可以放在主句之前，也可以放在主句之后。如果放主句前要注意用逗号分开主从句，放主句后则不需要。）

eg. If you want to play back, press the red button.

如果你想回放，按红色按钮。

Wait for thirty seconds if the red light doesn't come on.

如果红灯亮，请等待三十秒。