Unit 10 I’ve had this bike for three years.
The Third Period (Section A Grammar Focus, 4a-4c, Section B 1a-1d)
Teaching aims（教学目标）
1．学会谈论财产和周围的事物
2. 能够熟练的运用现在完成时态
3. 能区分运用现在完成时与一般过去时
Language points（语言点）
要求掌握以下句式： How long has it been there?
It has been there for…/since…/as long as…
