英语连词用于连接句子中的词语、短语或从句，使句子表达更加流畅和清晰。英语连词可以分为以下几类：
并列连词
and
but
or
nor
so
for
相关连词
both…and
either…or
准连词
such as
for example
in addition
引导名词从句的连词
who
what
where
when
why
that
引导定语从句的连词
whose
which
who
whom
whose
where
when
引导状语从句的连词
when
before
after
while
before
since
until
as soon as
这些连词在英语语法中起着至关重要的作用，帮助构建复杂的句子结构。