1. Explanation

Party, except in legal language, means a number of persons. Do not use it to mean one person. For example, do not say I met a party from the city unless you are thinking of a number of persons.

Date, as you have learned, means a definite time. Do not use it to mean appointment, or engagement. Do not say, for example, I have a date with Mrs. Smith or I made a date with Mrs. Smith.

Whole should be used in speaking of an entire thing. It should not be used in speaking of a number of persons or things. You may say, for example, The whole day was given up to athletic sports. You should not say, The whole of the boys went, but All of the boys went.

2. Exercise

Use the words party, person, dale, appointment, whole, and all in sentences.