作业帮She has lunch at twelve的否定形式为什么是She doesn't have lunch at tw
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She has lunch at twelve的否定形式为什么是She doesn't have lunch at twelve.
变否定形式时,什么时候has（have）要改成hasn‘t（haven’t）,什么时候又要将has（have)改成doesn't have（don‘t have）?请举出详细解释和例子,
变否定形式时,什么时候has（have）要改成hasn‘t（haven’t）,什么时候又要将has（have)改成doesn't have（don‘t have）?请举出详细解释和例子,
那要看have在句中的具体意思喽!
aux.用以构成完成式及完成式的不定式,表示已经……
vt.有,具有；拿,取得；从事；必须,不得不
1、如果它作为have to（不得不）出现的时候,否定时要加don‘t/doesn’t
2、如果它作为一般实意动词时也同上
3、如果它用于完成和完成式的不定式构成的话,就比如have done时,就要用haven't/hasn't了.
希望可以帮到你
aux.用以构成完成式及完成式的不定式,表示已经……
vt.有,具有；拿,取得；从事；必须,不得不
1、如果它作为have to（不得不）出现的时候,否定时要加don‘t/doesn’t
2、如果它作为一般实意动词时也同上
3、如果它用于完成和完成式的不定式构成的话,就比如have done时,就要用haven't/hasn't了.
希望可以帮到你
She has lunch at twelve的否定形式为什么是She doesn't have lunch at tw
She has lunch at twelve.改否定,快
She doesn't have lunch at school.(改为肯定句)
she has lunch at home.改否定
She has lunch at school at twelve o'ciock.
She doesn't have lunch at home every day,为什么不用hasn't
She has lunch at twenty t( 3 )twelve at school.In the aftern
she has lunch at twelve o'clock.(改为特殊疑问句
lunch,she,at,twelve,has,usually,o'clock排列句子
改为一般疑问句：She has lunch at about twelve
She doesn,t have lunch .
She seldom has lunch at school _____?A hasn't she B doesn't