I remember that I wrote to him.是什么意思？

I remember that I wrote to him.

我记得给他写过信了。

remember

vt.& vi. 记得，牢记；vt. 记着，纪念，回想起，送钱[礼物]给…；

例句
Although I was only six, I can remember seeing it on TV...
虽然那时我只有6岁，我依然记得在电视上见过它。

that

det. 那个，那；pron. 那个，那；conj. 多么，如此…以至，用于某些动词、形容词和名词后，引出各种从句；adv. 不那么，那样；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

wrote

v. 写( write的过去式 )，写信；

例句
Richard Brome, an acolyte of Ben Jonson's, wrote 'The Jovial Crew' in 1641...
本·琼森的仆人理查德·布罗姆在1641年写了《一伙快活人》。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

him

pron. (he的宾格)他；

例句
They said goodbye to him as he got aboard the train at Union Station.
当他在联合火车站登上火车之际，他们向他道别。