W
wh-
adverb
wh-
副词
word class 词类
criteria for 标准
major 主要词类
open and closed 开放型与封闭型
word 词
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
XYZ