来自郭永洪的问题
【英语have,has,had,having,haven,havent用法如题,越全面越好】
英语have,has,had,having,haven,havent用法
如题,越全面越好


【英语have,has,had,having,haven,havent用法如题,越全面越好】
英语have,has,had,having,haven,havent用法
如题,越全面越好
have非三单用法ihaveabook.
has三单shehasabook.
had委婉或过去youhadbettershutup.hehadabookyesterday.
having进行分词sheishavingbreakfastnow.
haven不存在
haven't助动词否定用法wehaven'tmeteachotherbefore.