英语的现在进行完成时态是怎么构成的?have being done 还是have been doing?
问题描述:
英语的现在进行完成时态是怎么构成的?have being done 还是have been doing?
我想表达这个:“我们已经合作了这么多年”,该如何说?
答
用have been doing.没有have being done这种形式.我们已经合作了这么多年:We have cooperated for several years.