By the time she was fifteen,Kitty ( )(teach)herself a foreig

By the time she was fifteen,Kitty ( )(teach)herself a foreign language,是has taught 还是had啊?
倾城之约 1年前 已收到4个回答 举报

我是没心没肺 幼苗

共回答了16个问题采纳率:100% 举报

had taught.过去完成时,表示的动作发生在过去的过去

1年前

9

piaobocai 花朵

共回答了6157个问题 举报

had taught
by + 过去时点 主句要用过去完成时
请及时采纳,不懂继续问
*^__^* 祝学习进步! 谢谢!

1年前

1

sjzyxh 幼苗

共回答了37个问题 举报

had taught
by +时间点 用于过去完成时

1年前

1

运擦过 幼苗

共回答了379个问题 举报

HaD

1年前

0
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