They didn't buy a ruler and a pen. Did they buy a ruleer and a pen? Yes,they did. No,they didn't. She wasn't at the library yesterday afternoon. Was she at the library yesterday afternoon? Yes,she was. No,she wasn't.
(1)一般疑问句 Did they buy a ruler or a pen? 肯定回答 Yes, they did. 否定回答No,they didn;t. (2)一般疑问句 Was she at the library yesterday afternoon? 肯定回答 Yes, she was. 否定回答No, she wasn't.
They didn't buy a ruler and a pen.行为单词否定需要借助 助动词来体现 Did they buy a ruleer and a pen?同样借助 助动词 Yes, they did. No, they didn't. She wasn't at the library yesterday afternoon. Be动词的话 直接后...
They didn't buy a ruler or a pen. Did they buy a ruler or a pen? Yes, they did./No. they didn't She wasn't at the library yesterday afternoon. Was she at the library yesterday afternoon.? Yes. she was./ No.she wasn't 希望对你有帮助哦~