English Questions

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Aug 20, 2011 10:05
1. What is the difference between "while" and "when" ?

ex: My dog is barking when the door bell is ringing?
My dog is barking while the door bell is ringing?

Does there has any difference between those two sentence?
I suppose there is no difference between those two. Am I wrong?


2. Sally read three time as many as I.
Saly read three time as many as I "do".
Should I put a "do" in the end of the sentence? if yes, why?


3. what is the difference between the following sentences?
ex: I believe you.
I believe "in" you.

If there is a difference bewteen those two? What is it?



Thanks. : )