Sentence adverbs
These modify the whole sentence/clause and normally express the speaker’s/narrator’s opinion. A. Adverbs expressing degrees of certainty (a) actually (= in fact/really), apparently, certainly, clearly, evidently, obviously, presumably, probably, undoubtedly (b) definitely (c) perhaps, possibly, surely Adverbs in group (a) above can be placed after be: He is obviously intelligent. before simple tenses of other [...]
