Only those he knows well could be let in
问题描述:
Only those he knows well could be let in
请问为什么know加上s
请分析句子
答
因为它的主语是单数第三人称he
只有他熟悉的人才让进入.
整个句子的主语是those,coule be let in是谓语.
而he knows well是those的定语从句.在这个定语从句中,he是主语,knows是谓语.