求助英语语法“be to be V+ed和be V+ed”两者区别，谢谢老师！ 这是什么语法规则：be V-ed+to V
be+v-ed+prep\u548cbe+adj+prep\u7684\u77ed\u8bed\u53ca\u610f\u601d1\u3001be tired of
\u82f1 [bi ˈtaɪəd ɒv] \u7f8e [bi ˈtaɪərd əv]
v.\u538c\u70e6;\u538c\u5026
I know that you must be tired of this excuse.
\u6211\u77e5\u9053\u4f60\u4e00\u5b9a\u538c\u70e6\u4e86\u8fd9\u4e2a\u501f\u53e3\u3002
2\u3001be interested in
\u82f1 [bi ˈɪntrəstɪd ɪn] \u7f8e [bi ˈɪntrəstɪd ɪn]
v.\u5bf9?\u611f\u5174\u8da3
I thought she might be interested in Paula's proposal.
\u6211\u89c9\u5f97\u5979\u5bf9\u8446\u62c9\u7684\u63d0\u8bae\u53ef\u80fd\u4f1a\u611f\u5174\u8da3\u3002
3\u3001be accustomed to
\u82f1 [bi əˈkʌstəmd tu] \u7f8e [bi əˈkʌstəmd tu]
\u4e60\u60ef\u4e8e?
It will not take you very long to be accustomed to the way we do it.
\u4f60\u4e0d\u5fc5\u82b1\u5f88\u957f\u7684\u65f6\u95f4\u5c31\u80fd\u4e60\u60ef\u6211\u4eec\u505a\u4e8b\u7684\u65b9\u6cd5\u3002
4\u3001be satisfied with
\u82f1 [bi ˈsætɪsfaɪd wɪð] \u7f8e [bi ˈsætɪsfaɪd wɪð]
v.\u6ee1\u8db3\u4e8e
We would be satisfied with any draft document, however vacuous.
\u6211\u4eec\u5bf9\u4efb\u4f55\u8349\u6848\u90fd\u4f1a\u611f\u5230\u6ee1\u610f\uff0c\u5373\u4f7f\u8349\u6848\u7684\u5185\u5bb9\u975e\u5e38\u7a7a\u6d1e\u4e5f\u65e0\u6240\u8c13
5\u3001be separated from
\u82f1 [bi ˈsepəreɪtɪd frəm] \u7f8e [bi ˈsepəreɪtɪd frəm]
\u88ab\u5206\u5f00;\u4e0e??\u5206\u79bb
The used water can be separated from waste matter and treated with chemicals so that it can be reused.
\u996e\u7528\u6c34\u53ef\u4ee5\u4ece\u5e9f\u5f03\u7269\u63d0\u7eaf\u51fa\u6765\u548c\u7528\u5316\u5b66\u65b9\u6cd5\u5904\u7406\uff0c\u56e0\u6b64\u5b83\u80fd\u591f\u518d\u5229\u7528\u3002
be V-ed+to V\uff1a\u88ab\u52a8\u8bed\u6001\uff0b\u52a8\u8bcd\u4e0d\u5b9a\u5f0f
be V-ed \u7ed3\u6784\ufe30\u88ab\u52a8\u8bed\u6001
to V\u7ed3\u6784\ufe30\u52a8\u8bcd\u4e0d\u5b9a\u5f0f
\u4f8b\u53e5
He was asked to do his homework yesterday.\u4ed6\u6628\u5929\u88ab\u8981\u6c42\u505a\u4ed6\u7684\u4f5c\u4e1a\u3002
\u5728\u53e5\u4e2d was asked to do\u5c31\u662f\u88ab\u52a8\u8bed\u6001\uff0b\u52a8\u8bcd\u4e0d\u5b9a\u5f0f\u7ed3\u6784\u3002
\u8fd9\u79cd\u7528\u6cd5\u4e0d\u662f\u4e00\u4e2a\u8bed\u6cd5\u89c4\u5219\uff0c\u800c\u662f\u4e24\u4e2a\u8bed\u6cd5\u89c4\u5219\u52a0\u5728\u4e00\u8d77\u3002
be to be V+ed和be V+ed的区别为：指代不同、用法不同、侧重点不同。
一、指代不同
1、be to be V+ed：be to do的被动形式。
2、be V+ed：是最简单的被动语态。
二、用法不同
1、be to be V+ed：情态动词+be+及物动词的过去分词，用以说明主语与谓语动词之间的关系。
2、be V+ed：一般现在时、一般过去时用be +及物动词的.过去分词，be有人称、时、数变，一般来说，只有需要动作对象的及物动词才有被动语态。
三、侧重点不同
1、be to be V+ed：这个结构有时间概念。
2、be V+ed：这个结构没有时间概念。
be to be V+ed是be to do的被动形式，因此要了解be to be V+ed首先要了解be to do
be to do有三种用法：
（1）be to do构成系表结构
如：
The problem is to find a solution.
问题是要找到一个解决的办法。
His plan is to clean the room.
他的计划是要打扫房间。
My wish is to be a doctor.
我的愿望是要当个医生。
(2)be to do构成谓语，表示事先商定、安排或准备要做的事情。如：
The students are to meet at the school gate tomorrow. 明天学生们将在学校大门口集会。
He is to have a holiday. (表示将来)
The committee is to meet today. (表示计划、安排)
(3)be to do表示可能性，必要、责任、义务、禁止等情态含义。如：
No one is to leave the building.谁也不得离开这楼房。
You are not to smoke in this room.=You are not supposed to smoke in this room.
You are to be back by 10 o’clock.=You must be back by 10 o’clock你必须十点以前回来。
其中的不定式也可用被动结构，也就是你要讨论的那种结构，如：
Such books are to be found in the library.这样的书在图书馆里就能找到。
Not a single sound was to be heard.一点儿声音也听不到。
Not a soul was to be seen.看不到一个人影。
be V+ed有两种用法
(1)V+ed作表语，如：
He is very excited.
(2)be V+ed一起构成被动语态的谓语。如：
This book was written by Lu Xun.
Her necklace was not to(couldn't)be found. 她的项链找不到了。
前面有被动的关系
后面没有被动的关系
前者 be to 有时间概念，表示将要发生，后者则没有
扩展阅读：lets to do还是doing ... buy sth to sb ... be addicted in还是to ... begin to do还是doing ... be poor in还是at ... bear doing something ... be unique to sb ... lets go doing sth ... stop to do和stop doing ...
