[Grammar] will have been -ing and the time expression 'for the last'

[adrenalinman]

Is this sentence correct? :
I will have been taking swimming lessons for the last half an hour

 

[GoesStation]

No. The last half hour is used in reference to the present.

 

[emsr2d2]

It is incorrect because it lacks a closing punctuation mark.

 

[adrenalinman]

I think that would be apprpriate instead:

I have been taking swimming lessons for the last half an hour. Is that correct?​

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No. The last half hour is used in reference to the present.

 

[GoesStation]

Taking swimming lessons is a long-term, ongoing endeavor, not something you do for just half an hour. You might say I've been having a swimming lesson for the last half hour or I've been taking swimming lessons for the last six months.