English only :)

[Carbon]

There is no rule. The more you learn English by speaking/typing, the more two-part verbs you will know. Fortunately, this is not as difficult as it seems. For example, when you leave something or break, then usually you have to add 'off'/'down' or something like that. Do you undestand? When it is something 'positive' then you add phrases like 'on'/'up'. I don't know how to explain that.

Btw., am I right? Can anybody confirm what I've just said?