she is sitting under the tree

题目

she is sitting under the tree
句子里边的介词短语是under the tree,还是sitting under the tree.
另外介词短语可以做表语吗?he is under the tree.如果可以,上边的那个句子里介词短语是做表语吗?

答案

She is sitting under the tree.此句话的意思是“她正坐在树下.”
is sitting作谓语,说明动作状态；under the tree介词短语作状语,修饰动作is sitting,表示地点.
介词短语是可以做表语的,如She is under the tree.她在树下.under the tree介词短语作表语,说明She的状态.