Question

1. Don’t talk about such things of __________ you are not sure.

1. Don’t talk about such things of __________ you are not sure.

A. which B. what C. as D. those
答案是a为什么这里用不能用c了
翻译一下
不是sure about 吗？
选第一个的话，怎么翻译呢
而且有such as的说法呀

Answer 1

you are not sure of such things
用which来替代宾语such things,而as不能.
不是sure about,about是talk后的介词,
talk about sth,谈论某事.
Don’t talk about such things of which you are not sure.
不要谈论这些你不肯定的事情.

such as连起来是例如的意思.例:
I have a lot of interests,such as computer,football,basketball and so on.

你指的是such...as...(像...一样的)结构,而这句前面已经有了介词of来修饰things.
例:
He is such a sucessful man as his father.
他是一个像他父亲那样成功的一个男人.

如果说这句没有of,那么是可以用as修饰things的.
那就是:
Don’t talk about such things as you are not sure of.
后面的as you are not sure of整体来修饰such things.

Answer 2

which
整体看来这是定语从句
you
are
not
sure
of这句话是修饰such
things的，be
sure
of
是介词短语，在定语从句里such
things
是介词of的宾语，只能用which。as引导定语从句一般置于句首，如as
is
known
to
all，the
earth
is
not
the
center
of
the
universe。as指的是后面一整话

Answer 3

of 是介词
这是一个常用的从句搭配
介词后面跟which

Answer 4

of
which
是固定搭配
意思相当于
that
don’t
talk
about
such
things
of
which
you
are
not
sure.
就相当于
don’t
talk
about
such
things
that
you
are
not
sure.

Answer 5

这句话，
就算是B
还是有语法错误，
但是，
最好的答案，
也只能是B了。。