3. 当你去购物时，不要用塑料袋。

 plastic bags when you go shopping.

2. 严禁酒后驾车。

People shouldn’t be allowed to .

1.什么时候开始取决于天气情况。

When to start  the weather conditions.

5. Many people donated money to Project Hope.(改为被动语态)

Money   to Project Hope by many people.

4. There is going to be a show about environment here.(改为否定句)

There    be a show about environment here.

3. They often go shopping at the weekend.(对画线部分提问)

   they often go shopping?

2. The charity show is going to be held next Sunday.(对画线部分提问)

   the charity show going to be held?

1. It's important that we organize our ideas before we start writing.(同义句转换)

It’s important for us   our ideas before we start writing.

() 7. (2015*威海) you another day to make your decision.

   A. gave   B. are giving   C. will be given

() 6. (2015 •云南) WeChat (微信) is very popular.  the young the old are getting interested in it.

   A. Neither;nor   B. Either;or

   C. Not only;but also   D. Between;and