Has Learnt or Learned?

Both versions of the word are actually correct and widely used in the English-speaking world, but there is one small difference between the two words. 'Learned' is the preferred way of spelling in the US and Canada, while 'learnt' is favoured in British English.

How do you use Learnt in a sentence?

Learnt is an alternative spelling of the same word. It rhymes with burnt. It is only used as a past tense verb, and only in British English, like in these sentences: “My big brother learnt his math at Cambridge,” the little orphan boy lied.

Where do we use has and have?

Have and has indicate possession in the present tense (describing events that are currently happening). Have is used with the pronouns I, you, we, and they, while has is used with he, she, and it.