I can't remember which teachers I had...是什么意思？

I can't remember which teachers I had...

我记不清哪些老师教过我。

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。

which

pron. 哪一个，哪一些，哪个，那，指前面提到的事物；adj. 哪一个，哪一些；

例句
...the latest date at which a foetus can be aborted.
能够打胎的最迟日期

teachers

n. 教师( teacher的名词复数 )，师资；

例句
The book is an invaluable aid to teachers of literature...
这本书对于教授文学的老师来说帮助非常大。

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。