Is it correct to delete the subject from this sentence to avoid repetition?

Question

or I should simply say

There are some likely typos in your choices; "and a certified" is probably supposed to be "and am certified", and "as as" is just wrong. — Nathan Tuggy, Sep 19 '17 at 10:18
It is supposed to be "as a (complement of the sentence)" and ignore the (a) before certified. — user62429, Sep 19 '17 at 10:35
Is it correct to say "I have OSHA and certified from the ministry as a (complement of the sentence) " without using the "am" ? — user62429, Sep 19 '17 at 10:40

StoneyB · Accepted Answer · 2017-09-19 11:05:46Z

In this sort of context you can only delete elements which are identical in both clauses.

Your two clauses are

I have OSHA
I am certified ...

You may therefore delete the second I, but must retain the verb am:

I have OSHA and am certified ...

If your two clauses are

I have OSHA
I have a certificate ...

you may delete the second I have:

I have OSHA and a certificate ...

Note, however, that this is true only if the two haves are identical in sense and syntactical role. If your two clauses are

I have OSHA
I have earned a certificate ...

the second have cannot be deleted, because in the first clause have is a lexical verb and in the second have is an auxiliary:

I have OSHA and have earned a certificate ...

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