七、按要求改写句子。
1. The signs over there mean "Danger!"(改为单数句)
The over there "Danger!"
2. The sign near the tree means "No climbing".(对画线部分提问)
means "No climbing"?
3. I did my homework yesterday.(改为否定句)
I my homework yesterday.
4. It means the floor is wet.(改为一般疑问句)
it the floor is wet?
5. We can't eat bananas here because there are a lot of monkeys around us.(对画线部分提问)
you eat bananas here?

1. sign; means
2. Which sign
3. didn't do
4. Does; mean
5. Why can't

1. 原句为复数句，改为单数句时，复数名词signs要变为单数sign，主语变为单数第三人称，谓语动词mean需变为第三人称单数形式means。
2. 画线部分是修饰sign的地点限定语，提问“哪个标志”要用Which sign。
3. 原句是一般过去时的肯定句，改为否定句需在实义动词前加助动词didn't，同时实义动词did还原为原形do。
4. 原句是一般现在时，主语it是第三人称单数，改为一般疑问句要借助助动词Does放句首，实义动词means还原为原形mean。
5. 画线部分是原因状语从句，对原因提问用疑问词Why，原句含情态动词can't，直接将can't跟在Why后即可。

八、根据上下文及图片提示，完成对话。
A：Let's go to the bookshop.
B：Look! There is a sign on the . Does it mean it doesn't sell books about dogs here?

A：No，it .
B：What does it mean then?
A：It means you can't your pets the .

door; doesn't; take; into; bookshop

根据图片可知标志在书店的门上，所以第一空填door；上句是does引导的一般疑问句，否定回答用doesn't；结合标志含义，该标志表示禁止将宠物带入书店，所以后三空分别填take, into, bookshop。

九、根据首字母提示填空。
Can you see these signs in my hand? They are public s. Today，I'd like to talk a them. Now look at the f one. Maybe you often see it in the street. This is the first letter(字母)of a w. The word is "Park". It m you shouldn't p your car or bike here. So if you see it，you should t your car or bike away，or(否则)s will punish(惩罚)you. Do you like swimming? I'm g at it. But we can't swim in rivers or lakes. Look at the sign. It means you s swim here.

signs; about; first; word; means; park; take; someone; good; shouldn't

1. 根据前文提到的"signs"及首字母s，结合短语"public signs（公共标识）"，填signs；2. 固定搭配"talk about（谈论）"，首字母为a，填about；3. 语境指第一个标识，首字母f，填first；4. 后文提到"The word is 'Park'"，首字母w，填word；5. 主语it是第三人称单数，表达"意思是"用means，首字母m，填means；6. 结合"Park"标识的禁止停车含义，首字母p，填park；7. 固定搭配"take away（移走）"，首字母t，填take；8. 语境指"有人会惩罚你"，首字母s，填someone；9. 固定搭配"be good at（擅长）"，首字母g，填good；10. 前文提到不能在河湖游泳，标识意思是不应该在此游泳，首字母s，填shouldn't。