в чем разница между ''as'' и ''like''?

Use like, not as, to compare unlike things.
• Her perfume smells like oranges.
• Henry, like Harold, enjoys rollerblading.

Only use as if you implying that the two things being compared are essentially the same. For instance, if you want to say that a certain performer appears in the garb of Elvis, you could use as.
• Betty sings as Elvis.

But if you want to suggest that Betty’s singing resembles Elvis’s, you are making a comparison, so like is the proper word.
• Betty sings like Elvis.

A few more examples:
• As a virgin, Mary was very surprised to discover that she was pregnant.
Mary is a virgin; use as.

• Like a virgin, Madonna is anxious about sleeping with her lover.
Madonna is not a virgin; she is only being compared to a virgin. Use like.

• Madonna is as giddy as a virgin.
As . .as is a comparison formula. Essentially, Madonna’s giddiness is the same as a virgin’s giddiness. Since two identical things are being compared (two giddinesses), use as.

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разница большая и обьяснять долго, самый простой вариант аs в качестве кого-то или чего-то He works as a teacher а like похож She is like her mother