8月22日早上 8:19--8:59

This house was built in 1930.

动作的承受者(不知道或者没必要知道动作的执行者):

A lot of money was stolen in the robbery.

Is this room cleaned every day?

需要说明动作的执行者时，用介词 by:

Two hundred people are employed by the company.

This house was built by my grandfather.

练习题：

Cheese is made from milk.

The roof of the building was damaged in a storm a few days ago.

There's no need to leave a tip. Service is included in the bill.

You were invited to the wedding. Why didn't you go?

A cinema is a place where films were shown.

In the United States, elections for President are held every four years.

Originally the book was written in Spanish and a few years ago it was translated into English.

We were driving along quite fast but we were overtaken by lots of other cars.

提问：

How is the glass made?

When was Australia discovered?

What is silver used for?

When was television invented?

填空:

Water covers most of the Earth's surface.

Most of the Earth's surface is covered by water.

The park gates are locked at 6:30 p.m. every evening.

The letter was posted a week ago and it arrived yesterday.

The boat sank quickly but fortunately everybody was rescued.

Ron's parents died when he was very young. He and his sister were brought up by their grandparents.

I was born in London but I grew up in the north of England.

While I was on holiday, my camera was stolen from my hotel room.

While I was on holiday, my camera disappeared from my hotel room.

Why did Sue resign from her job? Didn't she enjoy it?

Why was Bill sacked from his job? What did he do wrong?

The company is not independent. It is owned by a much larger company.

I saw an accident last night. Somebody called an ambulance but nobody was injured so the ambulance was not needed.

Where were these photographs taken? In London? Did you take them?

被动语态改写句子：

All flights were cancelled because of fog.

This road isn't used very often.

I was accused of stealing money.

How are languages learnt?

We were advised not to go out alone.