概率事件 degrees or certainty
100% can/must/will/going to/definitely ['defɪnɪtlɪ]
80% probably
70% likely/possibly
50% maybe/may/might
30% unlikely
20% probably not
10% doubtful
0% can't/impossible
I'm going to see a move on Sunday evening.
I'll probably go to my hometown next Sunday.
I'm probably not do yoga after work tomorrow.
I'm doubtful that I'm a good swimmer.
always 100%
usually 80%
often 60%
sometimes 40%
seldom 20%
never 0%
条件判定 if + event + result
1st conditional : 符合逻辑
If it rains tomorrow I will stay home.
If there is a power cut,I will leave work.
2nd conditional : 不符合逻辑,不可能发生事件
If I won 10 million RMB tonight,I will quit my job.
If the sun doesn't rise tomorrow,I would die.