I don't know do what vs I don't know how do

The correct phrase is "I don't know what to do." The first phrase is incorrect because it combines two different structures in a way that doesn't make sense. The second phrase is also incorrect because it lacks the necessary preposition "to" after the word "how."

Last updated: March 15, 2024 • 700 views

I don't know do what

This phrase is incorrect. It combines two different structures in a way that doesn't make sense.

The correct structure is "I don't know what to do."

Show examples from the web [+]

... but Walls spent a weekend with Jennifer's mother in Kentucky: “My mom invited her to horseback-ride and, I don't know, do what hicks do. My mom loved her.
Do you want this or that and a lot of times they say, "I don't know, do what you want," or sometimes they say, "Yeah, I want it to sound this way or that way.
Swipe yourself off your feet, buy yourself some chocolate, get a mani pedi, I don't know. Do what makes you happy. This post is somewhat a rant but it is also ...
Jan 26, 2015 ... I don't know. Do what you want. I'm suspicious of any sort of meditation that tries to "do something". Meditation, for me, is about awareness.

Alternatives:

I don't know what to do.

I don't know how do

This phrase is incorrect. It lacks the necessary preposition "to" after the word "how."

The correct structure is "I don't know how to do."

Show examples from the web [+]

Dec 11, 2014 ... Dec. 11 (Bloomberg) -- Lloyd Blankfein said he isn't sure he can trust China's official economic data. “I don't know; how do I know?
I am shy and afraid of talking to girls I don't know. How do I start a conversation with a girl so that she thinks I am a gentleman? I am sweet, honest, and good ...
I am shy and afraid of talking to girls I don't know. How do I start a conversation with a girl so that she thinks I am a gentleman? Why don't girls talk about equality ...
I obviously block these people, but get new ones every day. How does this happen. I have no idea how to look up who is on skype that I don't know. How do they ...

Alternatives:

I don't know how to do.

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I don't know do what vs I don't know how do