她以前上课不做笔记，上学期的课才开始记。
She didn't used to take notes in class, but she started last semester.
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didn't英 /ˈdɪdnt/|美 /ˈdɪdnt/
used英 /juːzd/|美 /juzd/|英 /juːst/|美 /just/
to英 /tuː/|美 /tu/|英 /tə/|美 /tə/
解释
didn't used to 是 didn't use to 的变体写法，结构同为 didn't + used + 不定式 to + 动词原形，否定过去的学习习惯，表示行为模式的改变。
She didn't used to take notes in class, but she started last semester.
didn't used to 是 didn't use to 的变体写法，结构同为 didn't + used + 不定式 to + 动词原形，否定过去的学习习惯，表示行为模式的改变。