Whats this,Game,a,An,不定冠词 a 和 an 的区别 a 用于辅音（不是辅音字母）开头的词前。 an 用于元音（不是元音字母）开头的词前。,A guessing game,Whats that? Is that a/an?,A guessing game,Whats that? Is that a/an?,Its eraser.,her,Spell it , please.,A guessing game,Whats that? Is that a/an?,Its backpack.,his,How do you spell it?,A : Whats this in English ? B : Its a computer. A : Spell it , please. B : C-O-M-P-U-T-E-R. A: Great!,How do you spell it ?,Can you spell it , please?,Helen: Good morning, Frank! Frank: Good morning, Helen! Helen: How are you? Frank: Im fine, thank you! And you? Helen: Im OK, too. Frank: whats this in English? Helen: its a ring? Frank: Spell it ,please! Helen: R-I-N-G.,