神马作文网it seems that句型转换的问题
来源：学生作业帮 编辑：神马作文网作业帮 分类：英语作业 时间：2024/11/11 22:39:08
it seems that句型转换的问题
1、It seems that she was here last week.
——She seems to HAVE BEEN here last week.
2、 It seemed that she knew everyone there-
——She seemed to KNOW everyone there.
我想知道转换后第一句为什么用have been,第二句为什么用know.
it seems to be后可接名词性从句吗?
1、It seems that she was here last week.
——She seems to HAVE BEEN here last week.
2、 It seemed that she knew everyone there-
——She seemed to KNOW everyone there.
我想知道转换后第一句为什么用have been,第二句为什么用know.
it seems to be后可接名词性从句吗?
1.seem to do sth中,seem后面加的是不定式的一般形式；
而seem to have done sth中,seem后面加的是不定式的完成形式.
后者表示不定式的动作发生在seem动作之前.
2.第一句变化中,seems为一般现在时,即seem发生在现在,而was here为一般过去时,发生在过去.
也就是说不定式to be here发生在seem之前,所以使用其完成形式,即变成了：seems to have been here；
而第二句变化中,seemed和knew都是用过去式,表明这两个动作同时发生,所以只需要用seem to do sth即可.
3.It seems to be + 表语 结构中,to be经常可以省略,尤其是加表语从句时,此时一般没有to be.
所以It seems后面可以加名词性从句,it seems to be后面不加.
其表语从句一般由that,as if或as though引导.
如：It seems that you are tired.看起来你似乎累了.
It seems as if/though it is going to rain.看起来似乎要下雨了.
如果你满意我的答案,这是对我们答题者劳动的尊重,多谢!
而seem to have done sth中,seem后面加的是不定式的完成形式.
后者表示不定式的动作发生在seem动作之前.
2.第一句变化中,seems为一般现在时,即seem发生在现在,而was here为一般过去时,发生在过去.
也就是说不定式to be here发生在seem之前,所以使用其完成形式,即变成了：seems to have been here；
而第二句变化中,seemed和knew都是用过去式,表明这两个动作同时发生,所以只需要用seem to do sth即可.
3.It seems to be + 表语 结构中,to be经常可以省略,尤其是加表语从句时,此时一般没有to be.
所以It seems后面可以加名词性从句,it seems to be后面不加.
其表语从句一般由that,as if或as though引导.
如：It seems that you are tired.看起来你似乎累了.
It seems as if/though it is going to rain.看起来似乎要下雨了.
如果你满意我的答案,这是对我们答题者劳动的尊重,多谢!
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