1.
He would mistake the Chinese character 十 (meaning 10) for 千 (meaning 1000) or vice versa.
十字常常写成千字，千字常常写成十字。
2.
As is so often pointed out,
正像人们常常指出的，
3.
His intuition is invariably correct.
他的直觉常常是正确的。
4.
Life has often been likened to a journey.
生活常常比作旅行.
5.
He often treats me with indifference.
他对我常常漠不关心。
6.
Fishing is often frustrating.
钓鱼常常会遭到挫败
7.
He often indulges himself in drinking.
他常常耽溺于饮酒。
8.
People tend to gain weight on holidays.
人们常常在假期长胖。
9.
grin like a Cheshire cat
常常无缘无故地傻笑
10.
Man's best plans often miscrarry
神机妙算,常常失算
11.
River often overflow their bank.
河流常常淹没河岸。
12.
I was often disturbed by the pitter- patter of rain
常常扰乱我看书的情绪，
13.
Does he often go on like that?
他常常如此大吵大闹吗？
14.
But the mother of family usually does.
但家庭主妇们常常会看。
15.
I often go to the cinema after school.
放学后我常常去电影院。
16.
After school, I often sing songs.
放学后，我常常唱歌。
17.
I hear from her now and then.
我常常收到她的信。
18.
He often dilly-dallied in making up his mind, until it was too late.
他常常优柔寡断而误事。