causative verbs - use

make + object + base form - example: he always makes me laugh.

• to say that someone / thing forces / compels / leads someone / thing else to do something

get + object + infinitive - example: i couldn't get her to change her mind.

• to say that someone persuades someone else to do something

have + object + base form - example: i had my brother wash my bike.

• to say that someone instructs or arranges someone else to do something

let + object + base form - example: she let me use her new laptop.

• to say that someone / thing allows someone / thing else to do something

verbs of perception

see, watch, observe, notice, look at, hear, listen to, smell, feel, sense

use

verb of perception + object + base form

• when we hear / see the whole action or event - example: i saw him enter the kitchen.

verb of perception + object + -ing form

• when we hear / see an action or event in progress, a part of an action or event - example: my parents heard me quarrelling with my sister.