这两者都可译为“出席”,但含义上有区别:attend指“人”去了, attend to则进一步指“心”去了,介词to在这里指“集中注意力于…”,例如: He attended school, but didn't attend to his lessons. 他去上学,但不把功课放在心上。 He did attend the lecture this morning, but somehow he did not seem to attend to it. 今天上午他的确去听课了,可是不知 怎的他似乎心不在焉。