to infinitive

to infinitive

by Duyen Le

The verbs ask, decide, explain, forget, know, show, tell, and understand can be followed by a question word such as where, how, what, who, & when + to + infinitive.

​She asked me how to use the washing machine.

• Do you understand what to do?

• Tell me when to press the button.

• I'm not sure I know who to call.

​​When to use ‘to + infinitive’

1. We use ‘to + infinitive’ after specific verbs. (ask to go, plan to find etc.).

2. We use ‘to + infinitive’ after most adjectives to give the reasons (happy, anxiety)

3. We use ‘to + infinitive’ to show purpose, ‘to and for' for a full description on 'to, for purpose'

​​We use ‘to + infinitive’ after specific verbs 

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Want	Did they really want to jet ski?
Learn	You must learn to behave.
Plan	She’s planning to take a Spanish course.
Hope	David hopes to become an astronaut.
Decide	Don’t decide to leave so soon, please.
Help	Can you help me to solve this?