-
16
种时态：主动
一般
进行
完成
完成进行
现在
do/does
过去
did
将来
will do
过去将来
would do
is am are
+doing
was were
+doing
will be
doing
would be
doing
have/has
done
had
done
will have
done
would have
done
have/has
been doing
had
been doing
will have
been
doing
would
have
been doing
-
-
-
-
-
-
-
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