My favorite fruit is an apple这里为什么要在apple前面用冠词an

my favorite fruit ( )apples.填is?are? my favorite fruit ( )apple.填is?are? My favorite fruit is/are apples and bananas My favorite fruit is apples/apple My favorite fruit is apple 能说成My favorite fruit is the apple吗 My favorite fruit is orange orange要不要变复数 My favorite fruit is apples.改同义句快. My favorite fruit it is Apples的同义句 My favorite fruit is orange变为同义句 快 my favorite fruit is apples 这句话不矛盾吗 My favorite fruit is an apple. 此句是否正确? tomato is my favorite fruit 改错,怎么改 如何写my favorite fruit my favorite fruit is apple/myfavorite fruit are apples哪个对? My favorite fruit is bananas.这句话对吗?fruit要加s吗? 我的最爱是水果.翻译可以说My favorite is fruit.favorite可以作主语吗? lMy favorite fruit are apples and stawberries . My favorite fruit is bananas.请问上两句是不是正确的句子? My favorite fruit is apples .my favorite sport is football.为什么apples是复数football不能用复数 翻译：我最喜欢的水果是香蕉是My favorite fruit is banana.还是My favorite fruit is bananas.或者是其他的