What I Have Learned
Modal 1)____________ are special verbs which behave irregularly in
English. They give additional information about the 2)_________ of the main verb that follows it. They have a great variety of communicative functions.
The modal______________ expresses a general ability while
describes a past ability and expresses reported speech for can. On the other hand, the
modal___ expresses possibility, request or ask for permission and give permission.​