-Will you please show me how to operate the new machine?

问题描述:

-Will you please show me how to operate the new machine?
-Sure.It's a piece of cake.Now let me tell you ____ to do first.
a.what
b.how
c .whether
d.which
为什么选a而不是b,what和how在这种题里面如何选择.

1.选a
2.选what可翻译为“现在让我告诉你先做什么”,如果选how,这个句子中tell后面的宾语从句就少了一个主语it,应该是Now let me tell you how to do it .