她说她没法参加会议，因为她太忙了。
She said she couldn't attend the meeting because she was busy.
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couldn't英 /ˈkʊdnt/|美 /ˈkʊdnt/
解释
couldn't 是 can't 在间接引语中的过去式形式，表示无法做到某事。转述动词 said 为过去时，从句中 can't 时态后移为 couldn't。
She said she couldn't attend the meeting because she was busy.
couldn't 是 can't 在间接引语中的过去式形式，表示无法做到某事。转述动词 said 为过去时，从句中 can't 时态后移为 couldn't。