参考：https://www.zhihu.com/question/19880155/answer/118332792?from=profile_answer_card
我曾经总结过一些口语常用的话，写下面：
【没听清考官问题】
Sorry, I didn't quite catch that.
Can I just check, do you mean...?
I'm sorry, I‘m not familiar with the word...
Could you rephrase it please?
【卡壳，避免尴尬】
How can I put it? ur...
What else?
...um...what's the word?...um...what I'm trying to say is...
【开始自己的回答】
Thinking about it,...
Off the top of my head,...
Generally speaking/In general
On the whole,
It's hard to generalize,
To be quite/totally honest with you,
Frankly speaking/To tell you the truth
Actually
Basically
【完全懵逼，实话实说，化解尴尬】
That's a good question.（最好不要用，因为如果那个问题是一个很简单的问题，你这么一说显得特别撒）
That's a tough/difficult question.
I've never really thought about it.
Let me have a little think about it. (repeat questions to yourself)
【说完一个论点转化到下一个论点】
So that's one thing, and another...
So that's one thing, and as well as this...
Besides
In addition to this
And another thing I'd say is that...
【阐述原因】
Due to the fact that... and the reason for this is basically/mainly/primarily because...
simply because/for the simple fact that
firstly because...and also because
partly because...and also because...
【举例子】
And just to give you an example...
And one example that comes to my mind is...
【回答前的总述】
I'd say there are a number of differences/advantages/reasons... and one of which would be that...
【总结】
...which I think is ridiculous
...which I think is amazing
...which I thought was pretty good
So yeah, I guess those would be the main differences between...
So yeah, that's pretty much all that comes to my mind now
So yeah, that's basically what I think about...
So yeah, that's why I think...
【其他非常好用的套话】
If you've spent any amount of time here, I'm sure you've seen yourself just how popular it is.
And that's partly explains why... in addition to that...
I don't really think that's anything not to like about them.（狡辩）
...which I'm sure you've also been aware of...