有冇其他英文可以代替i think

I deem(formal)
in my point of view
to my mind
what I think is that..
I reckon / suppose / guess / believe
/ assume / expect / realize / know / recognize / understand

sometimes you have to synchronize the choice of word with the situation
you know,you cannot just stick to some specific words
languages are flexible

in my view I

I ponder ; I speculate; I ruminate
They all mean 思索;沈思;推測

一般人會習慣用I think, I guess等，根據一些外國權威說，最好是用I believe. 因爲前兩個用辭都不肯定，唯有I believe比較assertive， 這個會是最好的了。

另外還有I noted, I noticed, I learnt, I heard, I understand, I was told, 但用法有些不同。

你都可以用I find , I reckon

I find會比較簡單,
但用上去會顯得簡單而高級,
比較起I find會唔同level.

I reckon就少d人用,
用上去都比較複雜

我建議用[I find]