1.常见：trust me = believe me = have faith in me
2.口语：
（you can） take my word for it
（you can rely） on my word
you've got my word (for it).
believe
及物动词
vt. [W]
1. 相信;信任[+(that)]
他的话我一句也不信。
2. 认为;猜想,料想[+(that)][O2]
eg: We believe Mr. Smith to be innocent.
我们认为史密斯先生是无辜的。
I believe he has come.
我想他已经到了。
不及物动词
vi. [W]
1. 笃信宗教
eg:The Hendersons seldom go to church, but they believe.
亨德森一家很少去教堂做礼拜,但他们笃信宗教。
2. 相信;信任;信仰[(+in)]
eg:He did not believe in Howard's honesty.
他不相信霍华德为人真诚。
3. 猜想,料想
例句：
1.Experts believe that the coming drought will be extensive.
专家们认为即将发生的旱灾将侵袭大片地区。
2.He did not sound as if he believed her.
他听起来似乎并不相信她。
3.I don't believeing hosts.
我不相信有鬼。
4.He believed in marit alfidelity.
他认为婚内应该忠诚。
5.If you believe in yourself you can succeed.
只要自信，就能成功。
6.Many officers Ispoketo found it hard to believe what was happening around them.
很多和我谈过的官员都觉得发生在他们周围的事情令人难以置信。
7.I could not believe my eyes. She was far more beautiful than I had imagined.
我简直不敢相信自己的眼睛。她比我想象的漂亮多了。
8.That's normal,believe it or not.
那很正常，信不信由你。
9.And would you believe it, he's younger than me!
你信吗?他比我年轻!
10.It's absolutely amazing,believe youme.
这太不可思议了，真的。