one/only way to do something is to do something?

Do we say

1 One way to solve the problem is to do something,
2 One way to solve the problem is do something,
or
3 One way to solve the problem is doing something?

Thank you.

I say 1 or 3.

MikeNewYork said:

I say 1 or 3.

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Interesting. Previously I learned that we asy "all you did was duplicate my effort," but you don't say "one way to solve the problem is duplicate other people's experiences." Am I right?

I have seen something like 'All I want to do is + bare infinitive'.

Matthew Wai said:

I have seen something like 'All I want to do is + bare infinitive'.

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bare infinitive? Is that to say "all I want to do is leave?" for example.

Yes.

BTW, I would like to know that if someone said to you "all you did was duplicate my effort," would you consider the speaker is a little unfriendly to you?

Not necessarily. If they were right, it wouldn't be unfriendly. It might not be polite but sometimes the truth hurts.

emsr2d2 said:

Not necessarily. If they were right, it wouldn't be unfriendly. It might not be polite but sometimes the truth hurts.

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I like what you said. I feel better now. Thanks a lot

Heidi L said:

Previously I learned that we asy "all you did was duplicate my effort," but you don't say "one way to solve the problem is duplicate other people's experiences." Am I right?

Click to expand...

Not really.

2 is wrong.

Rover_KE's reply to my question below might be of some interest to the OP.

https://www.usingenglish.com/forum/...-all-correct?p=1183705&viewfull=1#post1183705