认为的英文：
believe
think
consider
deem

参考例句：

If you think it all hinged on the pilot wearing his lucky underpants, you’re superstitious.
如果你认为它完全取决于航天员穿着了幸运内裤，你就是迷信思维。

It’s spoiling for a hurricane, if you ask me.
要是你问我的意见，我认为飓风马上就来。

Look on as; regard as
看作;认为

to believe in homeopathy
认为顺势疗法有效

What do you make the total?
你认为总数是多少？

was adjudged incompetent.
被认为缺乏能力。

A woman considered brazen or immoral.
荡妇被认为轻佻、放荡的女子

That the earth is flat is an erroneous concept.
认为地球是平的观念是错的。

I think she is a hottie.
我认为她是一个辣妹。

We think of the Puritans as staid people.
我们认为清教徒是很稳重的人。

believe是什么意思：
v. 相信，认为

Believe not all you hear, tell not all you believe.
言不可尽信，信不可尽言。

I believe they will be on at that time.
我相信他们到时候会同意的。

He does not believe in portion.
他不相信命运。

think是什么意思：
v. 认为；想；琢磨；试想；预期；一心想；计划；记得

I think and think and cannot cease from thinking.
我想了又想，一直想个没完。

Think of solar power, and you probably think of photovoltaic panels.
当考虑到太阳能，你一定会想到光伏电池板。

Do you think it will rain? -- Yes, I think so.
你看会下雨吗？是的，我想会下雨。

consider是什么意思：
v. 考虑；考虑到；认为

consider as the favorite.
认为某事物是自己最喜欢的。

They considered this an invasion of their turf.
他们认为此举侵犯了他们的地盘。

We consider ourselves equals.
我们彼此不分上下。