※ 引述《czask (好好努力就会有收获 :))》之铭言：
: 大家好，最近复习到as + adj. (+N.) as 的用法
: 想请教下列三句的 ［ ］ 部分，该怎么解释呢？
: 谢谢
It seems like a tough challenge. Referring to Cambridge...
"As" is an adverb, for example: Run as fast as you can.
"As" is a prepostion, for example: It came as a shock
"As" is a conjunction, for example: They can do as they wish.
"As ... as" is an adverb/adjective phrase, for example:
1. I run (verb) as fast as you can (adverb phrase),
2. I am (be) as tall as you are (adjective phrase).
More examples:
https://dictionary.cambridge.org/grammar/british-grammar/as-as
Now then, I suppose we could analyze the following sentences...
: 1. The candidates are as busy [with their works] as bees are.
The first "as" is an adverb, and by adverb I mean, the "as" adds
an extra meaning to "busy". That is, they are not only busy but "
the same busy" as something else.
As to the "with their works", which is your main question, I
suggest you simplify the sentence by ignoring some extraneous
words, such as the adverb. Thus, you would have sth like this:
The candidates are busy with their works