Labor for: work on behalf of someone or something.
e.g. I labored for you all day long, and you didn’t even thank me.
Labor over: work hard on.
e.g. The lawyer labored over my case for
e.g. The doctor labored over his patient for hours.
Ask about: find out more about.
e.g. I want to ask about my application for that position.
Ask after: ask about the health and wellbeing of someone.
e.g. My in-laws asked after you.
Ask around: request information from a number of people.
e.g. I plan to ask around to see what people think about the new mayor.
Ask back: invite someone to come again.
e.g. Because of your rudeness, they will never ask you back.
Ask for: request for someone or something.
e.g. The policeman is asking for you.
Ask of: ask of something from someone.
e.g. I want to ask a favor of you.
Ask out: invite someone to go out.
e.g. I asked her out to dinner, but she refused.
Ask over: invite someone to visit.
e.g. I asked my neighbor over to fix my computer.
Therefore, learn more prepositional phrases with different meanings when used with different prepositions.
Run down: hit with a vehicle
e.g. The old man was run down by the bus.
Run down: stop functioning
e.g. My lawn mower is running down; I need to get a new one.
Run into: meet by accident
e.g. Yesterday, I ran into an old friend that I had not seen for decades.
Run out of: not have any more of something
e.g. Hurry! We're running out of time!
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