eg1. He is / was a teacher. ＝＞ Is / Was he a teacher 肯Yes, he is/was 否No, he isn’t/ wasn’t. 二、 无be动词，则再找情动can may should must need有情动则直接将其提前；
eg2.I can play soccer. ＝＞ Can you play soccer 肯Yes, I can 否No, I can’t. 注can’t容易多写n 注need有可能不是情态动词，怎么判断＝＞根据 “情态动词V原”的共性。
因为 need ①、情态动词“需要”，后接 V原 ②、实义动词“需要”，后接sth 或 to do sth. eg3. You need see a doctor. ＝＞ Must I see a doctor 肯Yes, you need. 否No, you needn’t. eg4. You need to see a doctor. ＝＞ Do I need to see a doctor 肯Yes, you don’t. 否No, you don’t. eg3中的need根据“情态动词V原”的共性可以判断是情动，但通常也不提前，要根据语气选择must开头,同样must开头的一般疑问句的否定回答，一般要选择用needn’t或dont have to作答。
eg5.--Must I stay here 肯Yes, you must . 否 No, you neednt 或No, you dont have to. 三、 无be动词，无情动，则再找是否有助动词will,shall,would,have,has,had,有则直接将其提前；
注have,has,had有可能不是助动词，怎么判断＝＞根据 “完成时态” 的结构。因为只有“完成时态”中才会有助动词have,has,had的存在，其他时态或位置的have,has,had都是实义动词。
“完成时态结构”如下 ①、 现在完成时have / has V-ed过去分词 eg. I / She have / has done my homework. ②、 过去完成时had V-ed过去分词 eg. She had left before/when I realized she was a cheat骗子. eg. We had finished cleaning the classroom before the teacher came. ③、 现在完成进行时 have / has been V-ing现在分词 eg. I have been swimming in the cold water for about two hours. 四、 无be，无情，也无助，则只有借助 疑问句专用助动词do,does或did，并将其提前后，且原实义动词形式务必要还原；
五、 变人称原句中涉及第一人称的人称代词、形容性物主代词、名词性物主代词要变成第二人称对应的人称代词、形容性物主代词、名词性物主代词；
同样，原句中涉及第二人称的人称代词、形容性物主代词、名词性物主代词要变成第一人称对应的人称代词、形容性物主代词、名词性物主代词；
eg. I like apples. ＝＞ Do you like apples 肯Yes, I do 否No, he doesn’t. eg. This is my book. ＝＞ Is this your book 肯Yes, it is 否No, it isn’t. eg. That computer is mine. ＝＞ Is that computer yours 肯Yes, it is 否No, it isn’t. eg. You are my friends. ＝＞ Am I your friends Be动也变化了 肯Yes, you are 否No, you aren’t. 六、 some或与some有关的不定代词要变成any及any有关的不定代词。
some＝＞any, something＝＞anything, somebody＝＞anybody, some one＝＞any one, somewhere＝＞anywhere 不变的特殊情况如下eg. I would like some drink.变一般疑问句 ＝＞ Would you like some drink 原因是表示发出诚恳的请求希望得到别人的肯定回答，或征求建议的一般疑问句，只能使用表示肯定的some 或 something 等不定代词。
七、附句中含有 “used to V原”结构的变一般疑问句时，有两种变法 1、借助助动词did 且提前，used 还原成use. eg.I used to watch TV after dinner. ＝＞ Did you use to watch TV after dinner 肯 Yes, I did. 否No, I didn’t. 2、也可直接将used提前.eg.I used to watch TV after dinner. ＝＞ Used you to watch TV after dinner 肯 Yes, I used. 否No, I usedn’t. 八、在含有 “ I think, I guess（guessed）, I believebelieved”等引导的宾语从句中，变疑问句时，无须考虑从句部分是否有be动词、情态动词或助动词，只需把主句部分变为疑问语序就可。变成 I think/guess/believe →Do you think/guess/ believe I thought/guessed/believed →Did you think/guess/believe I don’t think/guess/believe→Don’t you think/guess/believe难道你不认为 I didn’t think/guess/believe→Didn’t you think/guess/believe难道你不认为 eg. I think she is an English teacher.＝＞I don’t think she is an English teacher. 译我认为她不是一个