英語know的不定式用法問題

第壹句是賓語從句, 原句應該是I know (that) john will come tomorrow. that可以省略

第二句才是妳以為的搭配問題, know sb to do (可以從her看出, 如果是從句就應該是she, 即I didn't know (that) she will be late)