题目内容：

变成一般疑问句和否定句．1．This is an egg.2.That is an old clock.3.He's my teacher.4.I'm in class5.

优质解答

1.This is an egg 一般疑问 Is this an egg?否定 This is not an egg.2.That is an old clock.一般疑问 Is that an old clock?否定 That is not an old clock.3.He's my teacher.一般疑问Is he my teacher?否定He is...