×
Log in
Upload File
Most Popular
Art & Photos
Automotive
Business
Career
Design
Education
Hi-Tech
+ Browse for More
sara-greer documents
Documents
对现在的状态表示推测 : must /might/could /can’t +be… 对正在进行的动作进行推测在; must/might/could/can’t be doing sth 对过去的状态或事情推测