到明年夏天，她就在这所学校教了二十年了。
By next summer, she will have taught at this school for twenty years.
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Will英 /wɪl/|美 /wɪl/
taught英 /tɔːt/|美 /tɔt/
解释
will have taught：将来完成时，表示动作或状态持续到将来某个时间点
By next summer, she will have taught at this school for twenty years.
will have taught：将来完成时，表示动作或状态持续到将来某个时间点