Time Expressions:

For clock time informal AmE uses of or till for common to

e.g.It’s quarter of / till ten.

The usage with of is unknown in BrE; till is rare there. Informal BrE has the preposition gone (= past)

e.g. It’s gone eight.

AmE frequently uses after (past)

e.g. It’s twenty after nine

but favours past in combination with quarter and half

e.g. a quarter past ten

Time expressions without a preposition are more common in AmE:

e.g. The meeting started seven- thirty.

Forms such as “of the evening” (in the evening), “upside the head” (on the side of the head), “leave out of there” (leave there), “the matter of him” (the matter with him), “to” for “at” are common for AmE.

e.g. She’s to the store right now.

Adverbs. There is the greater tendency in AmE, especially in speech and in informal writing to use adjectives rather than adverbs:

e.g. You did that real good.

Some adverbs which used to be formed by adding –ly suffix no longer take –ly: “They answered wrong” instead of “wrongly”.

The use of adverbs formed from nouns + -wise: e.g. time-wise (from the point of view of time) or word-wise (as far as words are concerned) is considered more typically American.

One more morphological difference is the use in American English –ward: e.g. without -s > toward, backward.

Preferences in AmE are sure(ly), why then, okay now, anyways, still, all.

In standard American the adverb “right” is currently limited to contexts involving location or time:

e.g. He is right around the corner.

However, in the Southern-based vernaculars “right” may be used to intensify the degree of the other types of attributes: e.g. She is right nice.