F6. Verbs have the structure verb + object + to ~: tell, order, remind, warn, force, invite, encourage, persuade, teach, get (= persuade, arrange for), enable. (e.g. Can you remind me to phone Sam tomorrow?)
a. Passive verb: I was warned not to touch the switch.
b. After advise, recommend and allow, two structure are possible. (e.g. I wouldn't advise/ recommend staying in that hotel. (verb + -ing (without an object)) I wouldn't advise/ recommend anybody to stay in that hotel. (Verb + object + to ~). With (be) allowed (passive): Parking isn't allowed in front of the building.
c. Verbs (make, let) have the structure verb + object = infinitive (without to) (e.g. I made him promise that he wouldn't tell anybody what happened. (not to promise))
d. say 'make somebody do' (not to do), but the passive is '(be) made to do' (with to) (e.g. We were made to wait to wait for two hours. (= They made us wait ~))
more about the To + Infinitive
Idiom 365
Piece of Cake: something that is very easy to do
Example: The new project is a piece of cake for us.