They heard a cry when they watched TV last night.这句话有语法错误吗

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TheyheardacrywhentheywatchedTVlastnight.这句话有语法错误吗TheyheardacrywhentheywatchedTVlastnight.这句话有语法错误吗Th

They heard a cry when they watched TV last night.这句话有语法错误吗
They heard a cry when they watched TV last night.这句话有语法错误吗

They heard a cry when they watched TV last night.这句话有语法错误吗
有问题.应为：when they were watching.

正确;