托福听力TPO1 L3中,would have been 和wouldn't have been要如何区分?

区分 would have been born 和would be born He wouldn't have been able to make ends meet. i wouldn't have been +过去分词是什么时态? would have been 造句 Had it not been for the alarm clock she wouldn't have been l If you had not been in front of me,wouldn't I have been more can't have been和must have been You wouldn’t have caught such _bad cold if you hadn’t been c If you hadn't left the car unlocked,it wouldn't have been st it would have been tremendous We would have been very would have been的 总结