twice的造句

1.We go there maybe once or twice a month.

我们每月大概去那里一到两次。

2.You should visit your dentist at least twice a year.

你应该每年至少去看两次牙科医生。

3.New drivers have twice as many accidents as experienced drivers.

新驾驶员所出的事故是老驾驶员的两倍。