The new dictionaries are very useful.They ___well and ___already.The new dictionaries are very useful.They ___well and ___already.A:sell;have been sold out B:sold; had sold out C:sell;sell out D:are sold;have been sold out为什么不是B
问题描述：
The new dictionaries are very useful.They ___well and ___already.
The new dictionaries are very useful.They ___well and ___already.
A:sell;have been sold out B:sold; had sold out
C:sell;sell out D:are sold;have been sold out
为什么不是B
答
sell 表示销量很好的时候，可以事物用主动
但是表示买的时候，事物做主语要用被动。
sell
be sold out
答
当然2…因为字典卖得好并不是只在过去，现在也是卖得好，所以用一般现在时。
答
sell是一个特殊的谓语,sell是“卖”的意思,有及物动词和不及物动词两种用法 1）及物动词时主动语态是sb sell sth,某人卖某物被动语态就是sth be sold by sb ,某物别某人卖2)不及物动词时常用sth sell well表示某物卖...