玩游戏学语法
游戏规则：
每一个句子都可能
１）正确
２）有一个或多个错误
如果
１）句子正确，注明ＯＫ，
２）句子有错误，重写出正确的句子。
例：
i) Sam is reading.
→ OK
ii) Sam is boy.
→ Sam is a boy
揭晓答案时会简单说明语法要点。

Dolphin is sea mammal that is large, smooth and grey.

My teacher gave me a good advice.

When was you arrive in Shanghai?

I don't have as many friends as you have.

It's time you get out of bed.

You had fish for dinner, hadn't you?

Five employees of a restaurant in downtown Shanghai and some passer-bys were injured by a gas cylinder explosion at the restaurant on Saturday.

I suggest you to leave him alone.

There are around 180 aircrafts in total, including many of the classic aircrafts of the World War II.

There is a Chinese restaurant opposite to our hotel.

Although it is an old machine, but it is very reliable.

You need to spend more time in your study.

This house isn't enough big for large family.