He is lonely 还是alone呢?be动词后面不应该加形容词吗.像He is lucky to .这里就不能用

He is lonely 还是alone呢?be动词后面不应该加形容词吗.像He is lucky to .这里就不能用 系动词后面不是跟形容词吗,可是为什么会有He is alone的说法呢 Be动词后面到底加什么,为什么He is funny,加形容词可以,It was exactly what I need 关于英语be动词用法he后面为什么能用is不是用does吗? it is dangerous for children to swim alone.为什么用 alone?动词后不应该 He doesn't read books.为什么这里的read不加s?不是说开头是第三人称单数 后面动词就得加s吗 -----he is often left alone ,---------he never feels lonely He is alone,but he doesn’t feed lonely. Although he is alone he doesn't feel lonely? be 动词后面加形容词,那么is really 不是be动词加副词了吗? 为什么不能用Where is he going to? be anger at正常be动词后不应该加形容词angry吗?为什么这个可以用名词呢?