Question

I started throwing more stones (use 'infinitive' form of underlined words)

Answer 1

i started to throw more stones.

Answer 2

By using the infinitive form, we can write it as follows.

'I started to throw more stones.'

The infinitive form of any verb is the verb that is in its elementary form. It is that form of a verb that may appear in a dictionary.

The infinitive form of all verbs is generally preceded by 'to' (e.g., to do, to dance, to jog).

The infinitive form may not always be preceded by a 'to'.