He hasn’t arrived．He may, but, come later.

Eat over your dinner before it gets cold.

It is impolite to make fun at the blind.

No permission has given to anybody to enter the building.

Blair, although was born in Kentucky, lived and practiced law in Missouri

You’d better make a plan to your trip so that you can make full use of your time．

The police keep record of all the traffic accidents.

His English has improved much.

The Smiths have sent to California for a year.

汉译英

科学理论必须建立在事实的基础上。