from Thailand writes:
learned that the words hardly and rarely have the
same meaning and that moreover we can use these words interchangeably
in any sentence. Is this right or wrong?
are not quite interchangeable as they stand, but need some modification
first of all. If we add ever to hardly to arrive at
hardly ever, then this is synonymous with rarely and
also with seldom.
adverbs describe how frequently or regularly something happens.
Thus along a spectrum of frequency, starting with most frequent
and ending with least frequent, we might find the following: