他没有阻止事故的发生 He didn't prevent the accident from happening 为什么
he didn't know what was happening outside 为什么用的是was happenin
He didn't know what was happening outside,为什么happening是进行时?
他不知道如何处理这起交通事故.he didn't know ()()()()the accident
He didn't know what was happening outside为什么用进行时
prevent sth. from happening 什么意思?
___ to prevent sth bad from happening
Luckily,the boy didn't hurt his( )in the accident ,so he can
阻止惩罚应该用prevent penalty 还是prevent from penalty
如何用keep/stop/prevent sb from doing sth 来表示“他阻止她砍树"
Luckily,he didn't hurt badly in the accident(改错)
George was responsible for the accident because he didn’t gi
The doctors must stop the ___(医疗)accident from happening.