否定句:they weren't some famous singers at the concert yesterday
一般疑问句:Were they some famous singers at the concert yesterday?sheshoulddrinksomewater改为否定句和一般疑问句否定句：she should not drink any water一般疑问句：Should she drink any water?忘记和你说了 否定和疑问句中some 就变成any助动词提前就行了！记住 不管变什么句子你都会了额