EAP 140 AM - WANG, Lingshan - Week 3 3/4

We can find some abbreviations when we reading or writing.  We cannot use abbreviations for titles when we writing.

e.g.
1) My Dr. said that sleep too much time isn't good for health. (wrong)
    My doctor said that sleep too much isn't good for health. (right)
    ("Dr" here is wrong because it is an abbreviation for "doctor", and we cannot use abbreviations for titles when we writing.)

When we use abbreviations in our writing, we must make sure that our readers can understand them.  Because some abbreviation look same but meanings are totally different.
We also should notice if we want to use abbreviations like BC, a.m., No, we should add specific dates,times or amounts with them.

e.g.
1) The No. is very large. (wrong)
    The number is very large. (right)
    ("No." here is an abbreviation, we can write sentence like this.)