少兒英語學(xué)習(xí):現(xiàn)在完成時與過去完成時的用法區(qū)別，少兒英語學(xué)習(xí) 今天小編帶大家來看一下少兒英語第18課的“每課一句”希望對大家有所幫助。
　　 一、課文原文
　　Lesson 18 He often does this!
　　After I had had lunch at a village pub, I looked for my bag. I had left it on a chair beside the door and now it wasn't there! As I was looking for it, the landlord came in. 'Did you have a good meal?' he asked. 'Yes, thank you,' I answered, 'but I can't pay the bill. I haven't got my bag.' The landlord smiled and immediately went out. In a few minutes he returned with my bag and gave it back to me. 'I'm very sorry,' he said. 'My dog had taken it into the garden. He often does this.'

　　二、每課一句My dog had taken it into the garden.
　　這句話有的人會問，為什么不用現(xiàn)在完成時？即：
　　My dog has taken it into the garden.
　　如果用的是現(xiàn)在完成時，這句話的意思是：
　　我的狗已經(jīng)把你的包叼到花園里去了。這就說明，店主說這句話的時候，作者的包還在花園里。但是，其實這個時候店主已經(jīng)把作者的包拿回來了。店主用過去完成時來表達(dá)，就表達(dá)出了上面的含義，即：店主把包拿回來（過去的動作）之前，他的狗把包叼到花園里了（過去的過去）。
　　三、更多拓展As I was looking for it, the landlord came in.
　　句中的as的用法與while差不多，其引導(dǎo)的從句一般要用進(jìn)行時，其主句動作如果是持續(xù)動詞，一般也要用進(jìn)行時。
　　本句話中的come in沒有用進(jìn)行時，是因為come in是瞬間動作。