help的形容词和动词形式是什么
helpful adj. 有帮助的；有益的；
help vt. 帮助；促进；治疗；补救；
He has helped to raise a lot of money.
他帮着筹到了很多钱。
She made helpful comments on my work.
她对我的工作提出了有益的意见。
They had helpfully provided us with instructions on how to find the house.
他们已经热心地给我们提供了如何找到那所房子的说明。
The catalogue includes helpful information on the different bike models available.
该目录包含所销售的各种型号自行车的有用信息。
The staff in the branch office are helpful but only have limited information.
该分支机构的员工是帮忙的，但他们仅有有限的信息。
Building more bypasses will help the environment by reducing pollution and traffic jams in towns and cities.
修建更多的支路将减少城镇中的污染和交通堵塞，从而改善环境。
If it would help, I\'d be happy to take photographs.
如果用得着，我很乐意拍照。