aslongas后面的时态

　　You are welcome to come and stay as long as you give us plenty of notice.

　　只要你及时通知，我们都欢迎你来住宿。

　　Lead times on new equipment orders can run as long as three years.

　　新设备订单的交货周期可长达3年。

　　Take as long as you like, dear boy.

　　小伙子，随你花多长时间都行。

　　Customers often defer payment for as long as possible

　　顾客常常会尽可能地拖延付款。

　　As long as staff are smart, it does not matter how long their hair is

　　员工只要聪明，头发留多长没什么关系。