英语语法分析

I should capful and helpful.

我要谦虚与乐于助人。

Use one capful of the cleaner per gallon of water.

每加仑水兑一盖子清洁剂。

Take one capful every 4 hours until your cough goes away.

每四小时吃一瓶盖满直到不会咳嗽为止。