【一】Mary looks not quite herself.
备注:以上句子应改为下面2个句子
【1】Mary doesn't look quite herself.玛丽看起来很不正常/很不对劲。
【2】Mary is not quite herself.玛丽很不对劲/很不正常。
备注:以上quite herself都是做表语
【二】It's time for sb to do sth. 是某人做某事的时候了
解答：It is time for sb to do sth结构为主语+系动词+表语+后置定语
备注:for sb为不定式逻辑主语,与不定式to do sth构成不定式复合结构一起做后置定语修饰time
It【主语】// is【系动词】 //time //【表语】for sb to do sth【后置定语】
It's time for us to say goodbye to each other.是我们彼此说再见的时候了。
【三】It seems +形容词+that....that从句内容似乎....
解答:It 【形式主语】//seems 【系动词】//+形容词【表语】//+that【主语从句/真正主语】//
It seems impossible that Tom finished the work within two days.
汤姆在两天之内完成这项工作似乎是不可能的。
【四】It seems +that....似乎...
解答:It 【主语】//seems 【系动词】//+that【表语从句】//
It seems that they know what they're doing.看来，他们知道自己在干什么。
【五】keep it in mind that...记住that从从句表描述内容
解答:it为形式宾语，真正宾语为that从句
We should keep it in mind that getting up early is good for health.
我们应该记住早起对健康有益处。
备注:keep sth in mind是记住某事，当sth为从句时，会在加it作形式宾语，并把真正宾语的that从句放在句末。
