考研英语中常见的连词可以分为以下几类：
并列连词：
用于连接并列的单词、短语或句子。例如：
and
or
but
not only...but also...
whereas
either...or...
neither...nor...
like
likewise
similarly
equally
in the same way
in a like manner
that is to say
too
both
each
also
as well as
the same...as
in fact
compared with
in common
besides
additionally
for one thing
for another
first of all/to begin with/first/firstly
second/secondly/next
furthermore/moreover/beyond that/besides/in addition/what is more/also
从属连词：
用于连接主从复合句，引导从句。例如：
because
if
when
unless
since
until
as soon as
once
that
so that
in order that
lest
for fear
转折连词：
用于表示前后文意思的转折。例如：
however
nevertheless
in spite of
at any rate
in any case
whatever
but
yet
on the contrary
by contrast
unfortunately
while
whereas
unlike
conversely
nor
otherwise
rather
rather than
although
though
even though
even if
nevertheless
nonetheless
despite
时间连词：
用于表示时间关系。例如：
when
while
as
after
before
since
until
as soon as
once
目的连词：
用于表示目的关系。例如：
that
so that
in order that
lest
for fear
这些连词在考研英语中非常常见，掌握它们有助于理解句子之间的逻辑关系，提高阅读和写作能力。建议考生在平时的学习中多加积累和练习，以熟练掌握这些连词的用法。