I certainly would like a prompt reply.
Yes I certainly can make a sentence with that word.
I can certainly use that book.
mark exclaimed we certainly have correct
It is a declarative sentence.
certainly Yes. Certainly can be used to begin a sentence. Here are some examples: Certainly someone knows where this child lives. Certainly we're here for you if you need support. Certainly there are many people who beat cancer and go on to live healthy, happy lives. Certainly someone has the key to that safe.
Certainly. (where appropriate)
Both depending on what your entire sentence is. Try writing the sentence with both and reading it aloud. Whichever one sounds better go with.
Yes, certainly you can. Then you can start writing.
Most certainly not.
It may technically be a sentence because it contains a subject 'you' and a verb 'are'; but it certainly leaves a lot to be desired.
Certainly. Once I ate an apple.
We certainly are expecting a bit of precipitation tomorrow.