seem与look as if 用法区别

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seem与look as if 用法区别
seem与look as if 用法区别

seem与look as if 用法区别
1 It seems that she knows our city well(用于主语从句,做谓语)==She seems to know our city well(用于简单句,做复合谓语)
2 She looks / looked as if she had seen a ghost.(用于虚拟语气)
3 She looks as if she has been working very hard for a long time===She seems to have been working hard for a long time (用于非虚拟语气,似乎,好像)
--------look as if + 句子:
------ look as if + 表语从句