1)decide to do 决定做

We decided to put off the trip to the U.S.我们决定推迟美国之行。

2)make a decision to do ：

He has made a decision to buy a new computer.他已决定买一台新电脑。

3)make up one’s mind to do

The doctor made up his mind to go abroad for further education. 那位医生决定出国深造。

4)determine to do

We have determined to get the work done before National Day.我们已决定国庆节前完成这项工作。

5)be determined to do

He is determined to give up smoking.他决心戒烟。

6)decide that……(从句中动词用should + 动词原形)

We decided that we should widen the road.我们决定拓宽这条路。