There are three basic kinds of verbs plus many subclasses. Here we cover only the three basic types. Initially, verbs are divided into main verbs and auxiliary verbs. Then auxiliary verbs are divided ...
We can also use might, may and could for talking about what we think was possible in the past. NASA says it may/might/could have been suitable for life in the past. We use the modal verbs must and can ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback