英语作文关于节约能源的不需要整篇,给我一些句式就可以了,万分感谢

It's necessary to save energy, because energy is very limited for human being. Take fresh water as an example. The water that can be used to drink is so little that ...

We need to reduce the using of cars and other motor machine.Ride bikes to work instead.
Reduce the use of coal and petro,use the solar energy and wind blowing energy and water flowing energy instead.Use the clear energy in daily life.Make recycling use of some source such as use the grass and waste to produce CO and CH4 to burning for energy.To save the energy means less industry and more high technology and biology creation.Sometimes people need to spend their life in a more hard one to prevent the source on the earth from being used up.