we are certain that什么从句

2018年12月27日 - 同学你好~certain the Earth is the only one on which life can survive老师您好,我想问下图中画线句we are certain主系表,为什么certain后面加了tha...

2017年9月22日 - 英语语法澄清请问有没有补语从句?可薄冰大学英语语法书就出现了,we are certain that he will get over his illness,说是补语从句.可张道真认为是做状...