.. . .. . ..
f) What was Helen bringing to the party?
Deep structure
CP
C S
VP
NP PP
NP NP N Infl V P
N Det N
Helen was bringing what to the party
Surface structure
CP
NP C S
VP
N Infl NP PP
NP NP N Infl V P
N Det N
. 专业学习资料 .
.. . .. . ..
what was Helen e bringing e to the party
. 专业学习资料 .