"我今天必须要完成这个工作。"

Translation: I must finish this work today.

[Patrick_Dark]

I have to wonder what the purpose of "要" is here; it seems redundant to have "必須要".

[FuCnSW]

The same thing. It depends on personal habit.

要=必須=必須要=得=一定

But 要 can have different application in other sentences. The rest of words only have one meaning.

[.Alex_]

you can say that without 要 and the meaning of sentence will not change

[julykix]

consider: I must get this job done today

[beaudanner]

I must finish this job today. (same diff) ugh... It's impossible to test out with discrepancies like these.

[DominicYoue]

Today I must finish this work also makes sense

[KristinDekker]

Consider: i must finish this asdignment today.

[Bz16233]

Well…工作 usually corresponds to jobs and works (much more general and probably less specific in terms of the actual "thing" needed to be done) while assignment is more specific: think about a job of setting up a lab from scratch versus a assignment of filling out a homework packet. Hope this makes sense.

[Julia8031]

'by today' should also be accepted

[KX3.]

No, that'd be 今天之内.

[bighorsemonkey]

This work？ The first time I have heard this expression

[pashium]

Is the 成 really necessary to say "finish"?

[psqu6jbd]

How about "I need to complete this work today"

[Tamrin164940]

I have probably done this 30 times now, the app won't let me get past question

[bichyrichy]

duodingus!