The past tense of the verb ‘throw’ is ‘threw.’
To explain further, in English, verbs can change form to indicate the timing of the action. The base form ‘throw’ is used for the present tense, such as in the sentence, ‘I throw the ball.’ When referring to an action that has already happened, we use the past tense ‘threw,’ as in ‘Yesterday, I threw the ball to my friend.’
It’s important to remember that ‘throw’ is an irregular verb, which means it doesn’t follow the regular pattern of simply adding ‘ed’ to form the past tense. Instead, it changes completely to ‘threw.’ This irregularity is common in English and is something that learners often need to memorize.