therefore有两种用法,一在整句中,一在分句中。therefore是副词,但有时具有连词作用。
一、整句中时一般不放句末,句首后要有逗号,句中1、按一般副词使用2、做插入语(这两个分得清吧)
eg.1、Therefore,we
must
learn
English
well.
2、They
therefore
can
learn
English
well.
3、Many
fast
food
restaurant
,therefore,have
red
furniture
or
walls.
二、用在分句中,即一个句子一部分表示原因一部分表示结果。
这时一般词前要用分号,其后用不用逗号无所谓。若第二个分句前是逗号或无符号,则要注意therefore是副词,和so不一样,要保持句子完整,应用and
therefore。
eg.1、I
had
a
headache;therefore
I
could
not
go
to
your
party.
2、I
was
ill,and
therefore
could
not
come.
3、These
birds
are
very
beautiful
and
therefore
liked
by
many
people.
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