fool ..
it is
very
kind
about
you
arrive
help
It is very kind of you to help me.
it is
smart
about
you
arrive
work
be away from home
this
mathematics
problem
It's clever of you to work out this math problem.
If adjectives only describe things and don't evaluate the character of infinitive actors, use for.
Someone (short for someone), such adjectives include different, easy, difficult, important, dangerous, (impossible) and so on.
it is
very
dangerous
for
children
arrive
stride
this
busy
Streets.
It is dangerous for children to cross busy streets.
it is
difficult
for
we
arrive
end
this
It is difficult for us to finish the work.
be filled/suffused/brimming with
idea
zero
zero
zero
zero
zero
zero
zero
zero
zero
zero
zero
zero
about
Someone's sentence pattern. Can usually be converted into infinitive adverbial sentences, but for
Someone (short for someone) does not allow sentence patterns.
it is
very
lovely
about
you
arrive
provide
I
a
Seats.
=
you
be
lovely
arrive
provide
I
a
Thank you very much for giving me your seat.
it
be
carefree
about
he
arrive
lose
therefore
many
Things.
=
male
be
carefree
arrive
lose
therefore
many
Things. It was careless of him to lose so many things.
it is
very
important
for
you
arrive
practise
your
oral
English
exist
Every day; Tiantiandi
Life.
It is very important to practice oral English in daily life.
This sentence can't be said as: It
be
very
important
about
you
arrive
Practice ...