句子是[一般现在时]三单,
没有
be
动词,
用
Does
Mary
likes
singing.
=>
Does
Mary
like
singing?
The
baby
sleeps
all
the
time.
=>
Does
the
baby
sleep
all
the
time?
句子是[一般现在时]三单,
有
be
动词,
用
Is
Mary
is
a
nice
girl
.
=>
Is
Mary
a
nice
girl?
The
baby
is
lovely.
=>
Is
the
baby
lively?
They
boy
is
busy
=>
Is
the
boy
busy?