1 否定Mother's shoes aren't new .
肯定句：Mother's shoes are new .
疑问句：Aren't your mother's shoes new
2 Is this a long ruler
3 My desk is clean.
疑问句：Is your desk clean
加油!不明白再问!
1 否定Mother's shoes aren't new .
肯定句：Mother's shoes are new .
疑问句：Aren't your mother's shoes new
2 Is this a long ruler
3 My desk is clean.
疑问句：Is your desk clean
加油!不明白再问!