Do you know the boy __ under the big tree?

D的意思是躺在大树下
lie lay lain lying
具体解释在下面．．请仔细看 注意过去时
lie
[lai]
vi.
躺,平放,展现,展开,位于
v.
说谎,躺
n.
谎话,谎言
lie 1
[laI]
vi.
lay,lain,lying
躺,卧
He was lying in the shade of the tree.
他正躺在树荫下.
She lay down on her bed.
她躺在床上.
保持；处于（某一位置）
The factory lies to the west of town.
工厂在小镇的西边.
The plates lay on the table.
盘子在桌上.
lie in state
（尸体）供人瞻仰
lie low
躲藏
lie 2
[laI]
vi.
lied,lying
说谎
I'm sorry I lied to you.
我很抱歉向你撒了谎.
lie
n.
谎言
Why did you tell me a lie?
你为什么对我撒谎?
lie
exaggeratefabricatefalsifyfibreclinereposerisetruth

D是"躺着"的意思

现在分词做后置定语。。