Would/Wouldn't in Korean?
Say the question was "What would you do?" How would I reply?

Some phrases I'd like to say:
"I/you would/wouldn't do this."
"I/you would/n't be helpful."
"I/you would/n't answer back."
"I would/n't be grateful."
Any additonal tips are also greatly appreciated.

Thank you!

Question

Would/Wouldn't in Korean?
Say the question was "What would you do?" How would I reply?

Some phrases I'd like to say:
"I/you would/wouldn't do this."
"I/you would/n't be helpful." 
"I/you would/n't answer back."
"I would/n't be grateful."
Any additonal tips are also greatly appreciated.

Thank you!

Answer

If the person you are talking to is your friend you can say.
"I/you would/wouldn't do this."     나(너)라면 이렇게 (안)할거야.
"I/you would/n't be helpful."          나(너)라면 도움이 (안)될거야.
"I/you would/n't answer back."     나(너)라면  (답변할 거야 / 답변하지 않을거야)
"I would/n't be grateful."                나(너) 라면 (고마워할 거야 / 고마워하지 않을거야)

If the person you are talking to is someone who you need to be polite to you can say
"I/you would/wouldn't do this."     저(his name)라면 이렇게 (안)할 거예요.
"I/you would/n't be helpful."          저(his name)라면 도움이 (안)될 거예요.
"I/you would/n't answer back."     저(his name)라면  (답변할 거예요 / 답변하지 않을 거예요)
"I would/n't be grateful."                저(his name)라면 (고마워할 거예요 / 고마워하지 않을 거예요)