the words used.

I should have liked to have seen you,

is correct grammar but probably not correct statement of fact, as it
states a past desire to have done something at a period still further
remote, that is to say, "I should have liked (yesterday) to have seen
you (day before yesterday)." What is generally meant is either "I should
have liked to see you," that is "I (then) wished to see you," or "I
should like to have seen you," that is "I (now) wish I had seen you
(then)."

Every word has its own value and nearly all our mistakes arise from lack
of regard for the exact value of the words to be used.

Where a participial construction is used as the object of a verb, the
noun or pronoun in the object should be in the possessive case and not
in the objective. You should not say, "I object to him watching me," but
"I object to his watching me."

Care should be taken not to give objects to passive verbs. The very
common expression "The man was given a chance" is incorrect. It should
be "A chance was given to the man."

Care should also be taken to avoid the omission of the prepositions
which are needed with certain verbs, for example, "beware the dog,"
"What happened him" should be "beware _of_ the dog," "What happened _to_
him."

On the other hand superfluous prepositions are sometimes used in such
phrases as _consider of_, _accept of_ and the like.

Such errors are to be avoided by careful study of the meaning of words
and careful observation of the best written and spoken speech.

_Pronouns_

Pronouns are substitutes for nouns. They are labor saving devices. We
could say everything which we need to say without them, but at the
expense of much repetition of longer words. A child often says "John
wants Henry's ball" instead of "I want your ball." Constant remembrance
of this simple fact, that a pronoun is only a substitute for a noun, is
really about all that is needed to secure correct usage after the
pronouns themselves have once become familiar. A construction which
appears doubtful can often be decided by substituting nouns for pronouns
and vice versa.

A very common error is the use of the plural possessive pronouns with
the words _any_, _every_, _each_, _somebody_, _everybody_, and _nobody_,
all of which are always singular.

We could accomplish this if every one would do their part.

is wrong. It should be

We could accomplish this if every one would do his part.

Anoth