请解释为什么用having spent ,这是什么时态
请解释为什么用having spent ,这是什么时态
having spent some time in the city...求高手解释这是什么时态吖?have用现在分词,
after having spent whole mornings on the river.这句话用的是什么时态?
Having been 是什么时态
Having said that though,. 其中...ing是什么时态,这句如何翻译,请帮忙.
we have had been having a lot of rain recently 用的是什么时态 为什么这么
having been done是什么时态?
After having spent whole morning.这句主谓宾各是什么?
请解释这句话的时态运用
having done的句子是什么时态的,
英语中having done是什么时态?
请帮我分别解释下为什么要用括号里的时态