1 How awful. It's too bad.
I'm sorry to hear that. I know how you feel.
It doesn't sound good. It sound terrible.
I can sympathize. 这些短语用来表示同情,理解.
2 I'm worried that.. . I'm concerned that...
I'm afraid that 表示关心
3 may might can should must can't
50% 50% 30-70% 80% 95% 95%
百分比表示可能性,can't可能性也是非常高,和can不一样,
4 emergency 紧急情况 emerging 新兴的 ,不要搞混了
It's a emerging technology.