"An hour and a Half" or "An hour and a half hours"

[trek]

Am really confused.... the more i search in the net the more i get confused..
please help me..thanks..

[Philly]

.
an hour and a half = (1 hour + 1 half)
.
.
one and a half hours = (1.5 hours)
.

[wuwei]

.
an hour and a half = (1 hour + 1 half)
.
.
one and a half hours = (1.5 hours)
.

I still can not well understand "an hour and a half", do you mean that it lie on the words after the phrase, e.g, an hour and a half minute, that means 60.5 min. is it right?
Thanks
Ian

[Philly]

I still can not well understand "an hour and a half", do you mean that it lie on the words after the phrase, e.g, an hour and a half minute, that means 60.5 min. is it right? No.
Thanks
Ian

Hi Ian
You should think of it this way:
An hour and a half = 1 hour + 1 half (of an hour) = 90 minutes
.
The meaning of "an hour and a half" is exactly the same as "one and a half hours". The amount of time is identical, but the two structures are different. The former has two singular nouns (1 and 1), and the latter gives a number that is more than 1 (1.5) and therefore requires a plural noun (hours).
.
Do you understand these?
"an hour and a quarter"
"an hour and three quarters"
"an hour and twenty minutes"
"a day and a half"
"a week and a half"
"a month and a half"
"a year and a half"
"a year and a day"
"a year and two days"
"an inch and a half"
"a mile and a half"
.

[wuwei]

Hi Ian
You should think of it this way:
An hour and a half = 1 hour + 1 half (of an hour) = 90 minutes
.
The meaning of "an hour and a half" is exactly the same as "one and a half hours". The amount of time is identical, but the two structures are different. The former has two singular nouns (1 and 1), and the latter gives a number that is more than 1 (1.5) and therefore requires a plural noun (hours).
.
Do you understand these?
"an hour and a quarter"
"an hour and three quarters"
"an hour and twenty minutes"
"a day and a half"
"a week and a half"
"a month and a half"
"a year and a half"
"a year and a day"
"a year and two days"
"an inch and a half"
"a mile and a half"
.

Thanks, Philly,
Now I can understand the two, both mean that 90 min., and just a difference in usage.
Thanks
Ian

[trek]

Thanks guys...
short and simple....
something i can understand....