第1个回答 2013-10-17
Now we study harder than two years ago.
My father is taller than me.
第2个回答 2013-10-17
we study harder than we did two years ago
my father is a little bit taller than me
第3个回答 2013-10-17
Our efforts to learn more of my father is a little taller than I am now than two years ago.