方便的英文是convenient。
例句：
1、用信用卡付款非常方便。
It is very convenient to pay by credit card.
2、在城镇骑自行车常常比开车更方便。
A bicycle is often more convenient than a car in towns.
3、在方便的时候我会回电话的。
I'll call back at a more convenient time.
4、方便的话，我可以明天过来。
If it's convenient I can come tomorrow.
5、网上购物既便宜又方便。
Online shopping is both cheap and convenient.
天地为凭
