课程知识点列表
动词的过去式和过去分词的使用条件
网校学员皆五**提问
为什么有些短语后面要加动词原型，是怎么cai来定义的
网校学员丁程鑫**提问
为什么有些短语后面要加动词原型，是怎么cai来定义的
网校学员丁程鑫**提问
They can not hαve been a teacher.
they must hαve been cooker.
怎么句子里没有are
比如 they are must hαve been a cooker.
they must hαve been cooker.
怎么句子里没有are
比如 they are must hαve been a cooker.
网校学员丁程鑫**提问
They can not hαve been a teacher.
they must hαve been cooker.
怎么句子里没有are
比如 they are must hαve been a cooker.
they must hαve been cooker.
怎么句子里没有are
比如 they are must hαve been a cooker.
网校学员丁程鑫**提问
which是什么意思，为什么放在这里。means是什么意思，为什么放在they前面。
网校学员乖乖的**提问
老师，请问这里的 sure of 是什么意思呢
网校学员南京富**提问
视频在三十分三十五秒，这个句子里面为什么要用at
网校学员晓带土**提问
