Ngày tải lên :
18/10/2013, 15:15
... or disagreement. The proper aim of a usage guide is to resolve
these problems, rather than describe the whole of current usage.
The Oxford Guide to English Usage has this aim. Within the limits ... discoverer, photographer, executioner, organizer.
Principal exceptions: counsellor, carburettor, conqueror.
3. -or follows -at- to form a suffix -ator, often but not always in words
related to verbs ... -er. So
supervisor, compressor, prospector, but adviser, presser, perfecter.
-tor usually follows -c, unstressed i, and u, e.g. actor, compositor,
executor; -ter usually follows f, gh, l, r,...