she is sitting under the tree
问题描述：
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
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.