This is her an eraser.与This is her eraser.This is her an eraser.与This is her eraser.为什么不用“an”?

英语翻译Is this you pencil?Yes,it isIs this my pen?No,it isn'tIs that his book?Yes,it isIs that her erase?No,it isn't This is her an eraser.与This is her eraser.This is her an eraser.与This is her eraser.为什么不用“an”? Hey,please look at this picture.this is an English teacher.Her name is Alice.this is her ( ).Her ( ) is blue.And her key is white.If you like this girl,Please call her.Her telephone number is 161-7898. Erase This is ________ eraser.Is it ________ eraser?A.a,she B.an,her C.an,she D.×,her 为什么This is Ann an that is her mother.谓语动词用is Is this ( ) eraser?A her an B an C a D /说明理由 who will erase this pain中文是什么意思 把陈述句变为否定句； This is an English book.Running is her favorite sport Is this an egg? this is an easy this is an Is this an eye? Is this an umbrella this is an _ has an eraser .This is her eraser .横线上天什么 这句话的翻译 This is her bike.对her提问 This is her skateboard.就her提问