Phrasal verbs represent a practically limitless group of verbs that can be combined with short adverbs or prepositions to produce new meanings. Here are some examples: Phrasal verbs are ubiquitous in ...

A phrasal verb is a verb that is combined with a preposition (e.g. in, on, with) or an adverbial particle (e.g. up, out, off) The preposition or adverbial particle extend the meaning of the verb ...

Here, the phrasal verb keeps on means continues. It has the same meaning as keeps but is slightly stronger. Other phrasal verbs that extend the meaning of the main verb are hurry up and sit down.