1) be a credit to：为……增光
e.g. I hope you will be a credit to your school.
do credit to：为……增进荣誉
e.g. This piece of work does credit to you.
2) bear in mind：记住
e.g. I hope you will bear in mind all I am saying.
have in mind：考虑
e.g. Don’t give your confidence to others regarding the plan you have in mind.
3) begin with：以……为起点
e.g. He advised me to begin with something easy.
to begin with：首先
e.g. To begin with, we must consider the problem from all sides.
4) build up：逐步建成，增强
e.g. They are trying hard to build up an independent economy.
He went for an ocean voyage and built up his health.
build on：以……为基础，依赖
e.g. Let’s build on your idea.
We shall build on your supporting us.
5) by day：在白天
e.g. Most of them work by day and study by night.
by the day：(指工作报酬等)按日计算
e.g. Will you pay me by the day or by the hour?
