an apple是词语还是词组

an apple是词语还是词组 是a apple tree还是an apple tree? 英语里 是 There is an apple and a pear 还是 There are an apple and 一个苹果或一个梨是an apple and a pear 还是an apple and pear? it is an apple.句子成分 an apple是宾语还是真正主语 是I received an apple and is eating it还是 I received an apple 是An apple a day keep the doctor away.还是An apple a day keeps half an apple 还是a half apple there is an apple.分析结构 到底there是主语还是Apple是主语 ls this an apple?的肯定回答是Yes,this is an apple.还是Yes,it is an a 一个红色的苹果 是a red apple 还是 an red apple 并且说出为什么 一个大苹果是What a big apple还是What an big apple