I forgot to ask you if the sentences I sent you before were gamatically correct. Thank you. In particular the use of "through" in q. 1, "as for" in q. 4.

1) Time is personified through the use of a capital letter in line 9, through the use of verbs referring to human action (line 10: bending, come) and finally through the use of the possessive adjective “his” in line 11. 2) In the final couplet the poet declares that, if he is mistaken about the nature of perfect love, then he must take back all his writings on love, truth and faith.
3) If he has judged love inappropriately, then no man has ever really loved.
4) As for the layout, the sonnet is made up of three quatrains and a final couplet. The rhyme scheme is ABAB CDCD EFEF GG.

Let's analyze the grammatical correctness of the sentences you provided:

1) "Time is personified through the use of a capital letter in line 9, through the use of verbs referring to human action (line 10: bending, come) and finally through the use of the possessive adjective 'his' in line 11."

This sentence is grammatically correct. The word "through" is used correctly to indicate the means by which time is personified.

2) "In the final couplet the poet declares that, if he is mistaken about the nature of perfect love, then he must take back all his writings on love, truth, and faith."

This sentence is grammatically correct. It effectively expresses the idea of the poet's declaration in the final couplet.

3) "If he has judged love inappropriately, then no man has ever really loved."

This sentence is grammatically correct. It properly presents a conditional statement and conveys the intended meaning.

4) "As for the layout, the sonnet is made up of three quatrains and a final couplet. The rhyme scheme is ABAB CDCD EFEF GG."

This sentence is grammatically correct. The phrase "as for" is appropriately used to introduce the subject of the layout. The sentence structure is clear and accurate, providing information about the structure of the sonnet.

In summary, all the sentences you provided are grammatically correct.