5 请教 魔方英语语法 有关as的内容
老师好！
读了http://www.yygrammar.com/Article/201707/5171_2.html中《魔方英语语法》as引导定语从句的内容，我有一点疑惑的地方，请教老师：
1. 第三页中：which在“主谓宾”中，不能替换为as。如：
Tom was late for school again, which/(as不对) made his teacher angry.
我想了解as为什么不对。
Tom was late for school again this morning, as is often the case. 就是对的。
2. 里面有些例句我不认为是对的，我列出来，请老师们判断一下：
第二页：He is absent, as it is often the case.
第三页：He married her, as it was natural.
第四页：He is from the south, as we can know it from his accent.
He seemed a foreigner, as in fact he was a foreigner.
3. 对于第四页的表格：
我觉得有的是对的，比如as (it) appears。比如：
The book is as interesting as (it) appears.
比较项是 形容词，可以同时省去形式主语it和后面的that从句，变成as appears，也可以保留 it（指句子主语the book）。
也有几个我不确定正误，请老师指教:
主系表：as it seems likely
主谓：as it often happens；as I remember it
最佳答案 2022-06-23 16:50
1. which 引导非限定性定从。as 这里不能这样用。你这个句子：Tom was late for school again this morning, as is often the case. as is often the case. 是比较从句，不是定语从句。as 从句也可以放在句首，如：As is often the case，Tom was late for school again this morning. which 引导的非限定性从句显然不能放句首。
2.第二页：He is absent, as it is often the case. 第三页：He married her, as it was natural.
这两句应该去掉as后的it.
第四页：He is from the south, as we can know it from his accent.(去掉it较为多见，但也有用it的)
3. The book is as interesting as (it) appears. 此句的it 不能省，
He seemed a foreigner, as in fact he was a foreigner. (没错）。
主系表：as it seems likely： 本身没问题，但用在句子里要具体分析。
主谓：as it often happens；可以，注意英语里有个习语和它一字之差 as it happens,意思相当于actually.
as I remember it 本身没问题，有本书名就叫：As I Remember It.
如果觉得我的回答对您有用，请随意打赏。你的支持将鼓励我继续创作！
-
《高考英语备考1号·速效编》
-
《高考英语备考1号·写作编》
-
《高中英语晨读晚记》
-
《高中英语错题笔记》
-
《零起点考大学英语》
-
