Here are the sentences with the appropriate form of the infinitive:
- He wouldn't let my baby play with his gold watch.
In this sentence, "let" is followed by the base form of the verb "play" without "to." The structure "let someone do something" is used to indicate permission.
- Please let me know your decision as soon as possible.
Similarly, "let" is followed by the base form of "know." The request is for the person to inform the speaker of their decision.
- He made us wait for hours.
With "make," the base form of the verb "wait" is used. The structure "make someone do something" implies causing someone to do something, often without giving them a choice.
- I let him go early as he wanted to meet his wife.
Here, "let" is used again, so the base form "go" follows. The speaker permitted him to leave early.
- I'd like him to go to a university, but I can't make him go.
"I'd like" is followed by the "to-infinitive" form, "to go," while "make" is followed by the base form, "go." The sentence expresses a preference and acknowledgment of inability to compel action.
- He tried to make me believe that he was my stepbrother.
With "make," the base form "believe" follows. The sentence describes an attempt to convince or persuade.
- Before he let us go, he made us promise not to tell anybody what we had seen.
"Let" is followed by the base form "go," and "made" is followed by "promise." Both indicate actions that are permitted or compelled.
- I advised him to ask the bus-conductor to tell him where to get off.
"Advise" is followed by the "to-infinitive" form, "to ask." It's a recommendation or suggestion.
- That is too heavy for one person to carry; let me help you.
"For one person to carry" uses the "to-infinitive" to indicate purpose or capability. "Let me help" uses the base form "help," indicating the speaker is offering assistance.
- The teacher advised us to use dictionaries.
"Advised" is followed by the "to-infinitive" form, "to use," suggesting a recommendation.
- Her father doesn't allow her to go to the cinema alone.
"Allow" is followed by the "to-infinitive" form, "to go," indicating permission that is not given.
- Who told the nurse to give the sick man this medicine?
"Told" is followed by the "to-infinitive," "to give," indicating an instruction or directive.
- The old man doesn't like his grandchildren to make a lot of noise when they are playing.
"Like" can be followed by the "to-infinitive," "to make," indicating preference or approval.
- The gardener won't let the children pick the flowers.
With "let," the base form "pick" is used, indicating that the gardener does not permit the action.