ãã楼主çè¿ä¸ªå¥åæ误ï¼æ£ç¡®è¡¨è¾¾åºè¯¥æ¯ï¼This is my friend.
å¦å®å¥ï¼This isn't my friend.
å«beå¨è¯çå¦å®å¥æ¯å¨beå¨è¯çå ·ä½å½¢å¼åå notãåå¦ï¼
I am a student.---I am not a student.
They are at school. ---They aren't at school.
ä¸è¬çé®å¥ï¼Is this your friend?
1) å«beå¨è¯çä¸è¬çé®å¥æ¯å°beå¨è¯çå ·ä½å½¢å¼æåå°å¥é¦ãåå¦ï¼
Tom is in red.---Is Tom in red?
His parents are teachers.---Are his parents teachers?
2) éè¿°å¥ä¸ç第ä¸äººç§°ç代è¯ï¼å¨çé®å¥ä¸è¦æ¹æ对åºç第äºäººç§°ç代è¯ãåå¦ï¼
I am a student.---Are you a student?
It is mine.---Is it yours?