实验数据对不上——你为什么没有提前检查设备？
Why didn't you check the equipment before the experiment?
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Why英 /waɪ/|美 /waɪ/
didn't英 /ˈdɪdnt/|美 /ˈdɪdnt/
you英 /juː/|美 /ju/
check英 /tʃek/|美 /tʃɛk/
解释
疑问词 why 引导过去否定疑问句，didn't 助动词与主语 you 倒装，动词 check 用原形（过去时由 did 承担，动词不需变化为过去式）。
Why didn't you check the equipment before the experiment?
疑问词 why 引导过去否定疑问句，didn't 助动词与主语 you 倒装，动词 check 用原形（过去时由 did 承担，动词不需变化为过去式）。