It seem to be a good idea.为什么要加be再解释一下什么情况要用到to 后面加be

It seem to be a good idea.为什么要加be再解释一下什么情况要用到to 后面加be
It seem to be a good idea.为什么要加be
再解释一下什么情况要用到to 后面加be

It seem to be a good idea.为什么要加be再解释一下什么情况要用到to 后面加be
seem可用作连系动词或不及物动词,意为“似乎；好像”,其常见用法现归纳如下：
一、“主语+ seem +（to be ）+表语”,表语多为名词或形容词,有时是其他的词或短语,以说明主语的特征或状态.例如：
Tom seems （to be ） a very clever boy. 汤姆看上去是一个非常聪明的男孩.
The man over there seems to be a new teacher. 那边的那个人看上去像一个新老师.
Mr Black seemed to be quite happy. 布莱克先生好像十分快乐.
This small town seems changed a little. 这个小城镇似乎有点儿变化.
二、“主语+ seem + 不定式”,此句型中的seem与不定式一起构成复合谓语.例如：
Mrs Green doesn’t seem （或seems not ） to like the idea. 格林夫人似乎不太喜欢这个主意.
The children seemed to be eating something in the room. 孩子们好像正在房间里吃东西呢.
The young man seemed to have changed much. 这个年轻人看起来变化很大.
三、“It seems + that从句”,其中it 是形式主语,that引导主语从句.例如：
It seems that no one knows what has happened in the park. 似乎没有人知道在公园里发生了什么事.
It seems to me that Mr Brown will not come again. 在我看来布朗先生不会再来了.
四、“There + seem to be +名词”,其中to be 可省略.seem 的单复数形式要根据后面作主语的名词的单复数形式而定.例如：
There doesn’t seem to be much hope of our beating that team. 看来我们战胜那个队没有多大希望.
There seems no need to wait longer. 看来没有再等的必要了.
seem(好象)的用法：记住几个结构：①sb./sth. + seem + (to be+)形容词+…；②sb./sth. + seem + like +…；③sb/sth + seem + to (do)；④It seems that + 从句.如：He seemed (to be) very happy when he was called by the headmaster. (被校长叫到名字时他好象很开心) / It seems that nobody else could do such a foolish thing except Jim. (除了吉姆好象没有什么人会做出如此愚蠢的事情来)

to 后面要加以个谓语 如果不看seem to 的话这个句子就是It is a good idea .be 是is 的原型