Adverbials Of Probability

We use adverbials of probability to show how certain we are about something. The commonest adverbials of probability are:

certainly

clearly

definitely

obviously

maybe

perhaps

possibly

probably

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maybe and perhaps usually come at the beginning of the clause:

Perhaps the weather will be fine.
Maybe it won't rain.

Other adverbs of possibility usually come in front of the main verb:

He is certainly coming to the party.
Will they definitely be there?
We will possibly come to England next year.

or after the present simple or past simple of be:

They are definitely at home.
She was obviously very surprised.

But these adverbs sometimes come at the beginning of a clause for emphasis:

Obviously she was very surprised.
Possibly we will come to England next year.