英语四级中常用的连接词可以分为几大类，包括时间顺序关系、因果关系、转折关系、并列关系等。以下是一些常见的连接词及其使用示例：

时间顺序关系

at this time

first

second

at last

next

previously

simultaneously

eventually

last but not least

to begin with

to start with

to end with

finally

seeing...

since then

first of all

afterwards

following this

preceding this

因果关系

as long as

even if

even though

if

if not

on condition that

otherwise

provided

supposing

unless

because

because of this

being that

another important factor/reason of...

since

as

for

in that

owing to

due to

for the reason that

in view of

the reason seems to be obvious

there are

for this reason

as a result of this

therefore and so

consequently

as a result

thus

hence

转折关系

but

although

despite

however

并列关系

and

or

besides

further

furthermore

immediately

at first

after a while

afterward

also

举例说明

a case in point

as an illustration

for example

for instance

for one thing

for another

likewise

namely

on one hand

on the other hand

similarly

such as

such... as

这些连接词在英语四级写作和阅读中非常有用，能够帮助考生更好地组织和表达思想。建议考生在平时的学习和练习中多注意这些连接词的使用，以提高语言表达的连贯性和准确性。