4. 建议
Maybe, Perhaps, Possibly
One possibility that I can think of is...
Another idea to think about is...
5. 表达观点
It seems to me that...
This is only my opinion but...
After a lot of thought, I have come to the conclusion that...
I've never thought about this question much before, but it seems to me that...
6. 解释
The reason I believe this is...
The most important evidence supporting my belief is...
7. 推测
I'm not sure what might happen, but one possibility is...
It's hard to predict the future, but I suppose it / we might...
8. 分析
There are several points to consider, first of which is...
We can break this question down into several parts. First...
Let's look at this step by step. To begin with...