Question

what is the metaphor of my son is the apple of my eye​

Answer 1

Answer:

This phrase that at least used to be quite commonly used in American English is an example of a metaphor. The person who is the apple of your eye is someone that you find sweet and nice to look at. In that way, they are being compared to an apple.

Answer 2

Answer:

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Here son is directly compared to apple without using like or as.