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<正>1.She used to help my brother,who was verykind of her.【改】将who改为which。【析】犯这类错误的主要原因是把my brother错当成了先行词。关系代词which指代的先行词是整个主句,它引导非限定性定语从句。2.Do you still remember the day when we spenttogether in China last year?