4
votes
4answers
833 views

Can “be” be used with the modal verb “do”?

These two sentences are both valid I write this sentence. I do write this sentence. Are these both valid? I am writing this sentence. I do be writing this sentence.
8
votes
2answers
1k views

How to add emphasis to a modal verb

To add emphasis to a normal verb, we use the emphatic do: He does run fast. Do come in. Do brush your teeth. Obviously, with modal verbs this would be a grave mistake: (*) He ...