1.I can speak French as well as he.
2.His oral English is not as good as that of his friend,but his wriiten English is excellent.
3.His illnessis was more serious than we had imagined.
4.Yao is 40 centimeters higher than me .
5.The harder he works,the happier he feels.
6.Helen joined the ranks of the unemployed.（或：Helen became one of the jobless people.)
7.I don't know how they can afford such expensive holidays.
8.I made my first long journey by train when I was 16.
9.I'll never forget my first day at school when I was seven.
10.I changed those pants for large-sized ones .
11.I really don't want to bother to ask for their opinions.