What kind of toys have you had in your childhood? Ive had. How long have you had.? Ive had.for/since.,探究一 用for和since改写4a中的句子,然后和你的搭档核对答案,说明理由,并用since 或for填空,完成下列练习。 1. Ive practiced the piano 10:30. 2. Mario has run 15 minutes. 3. Sarah has slept 9:00. 4. Dale has talked on the phone five minutes. 5. Louie has studied Chinese he was six years old. 6. Ive lived here 1992.,since,for,since,for,since,since,探究二 完成4b中的练习,注意动词的形式和时态,然后和你的搭档核对答案。 探究三 和你的搭档共同完成4c中的表格,然后根据表格内容,写一篇简单的报告,你可以这样开始: Our class is going to have a yard sale. We each will sell some things we no longer use. Tony has had/owned/kept,延续性动词和非延续性动词的用法 现在完成时表示动作从过去某个时候开始一直持续到现在,与一段时间连用时应注意句中的谓语动词应该是延续性动词。非延续性动词不可和表示一段时间的词连用。如: 我离开这所学校已经八年了。 误:Ive left this school for 8 years. 正:Ive been away from this school for 8 years./I left this school 8 years ago.,