不定式to have written是什么意思?
不定式to have written是什么意思?
I have written the letter____ink是什么意思?
不定式 to have done 举例
动词不定式to have seen怎么替换?
i have not( ) to them ( ) a.written in1990 b.written last we
请问什么是不定式完成式,不定式不是"to”吗,那不定式完成式就是"to +have +v-ed"
I have to read letters written in pencil
Have you ever written a letter to the Santa Claus?
would have written?
不定式是什么意思?
It is written 是什么意思
written representation是什么意思