1.-Does Jane have a tennis ball?简有一个网球吗?-No she doesn't.不,她没有。 Does+主语(第三人称单数)+have…?询问第三人称单数的主语是否拥有某物。肯定回答:Yes，主语(第三人称单数人称代词)+ does.否定回答:No，主语(第三人称单数人称代词)+ doesn't。eg: —Does he have a brother?他有一个兄弟吗?—Yes he does.是他有。