's, is or has
What is the difference between 's, is and has?
In spoken English the words is and has are sometimes contracted to 's.
Have a look at the following examples:
- He's listening to music. → He is listening to music.
- He's listened to music. → He has listened to music.
In sentence 1. the 's is followed by listening. This verb has the ending -ing. It is Present Progressive (is + infinitive + -ing).
In sentence 2. the 's is followed by listened. This verb has the ending -ed. It is Present Perfect (regular: hass + infinitive + -ed or irregular: has + 3rd column of the irregular verbs).'s tells you whether you have to use is or has.