5)表示一種結(jié)果， 一般不和時(shí)間副詞聯(lián)用

　　I have lost my pen.

　　I have hurt myself.

　　He has become a teacher.

　　She has broken my heart.

　　句型變化：

　　變疑問(wèn)句將助動(dòng)詞移到句首，變否定句在助動(dòng)詞后面加not.

　　e.g. Have you lost your pen? I have not lost my pen.

　　肯定回答及否定回答

　　Yes, I have. No, I have not.

　　特殊疑問(wèn)句：

　　What have you done?

　　What has he done?

　　一般過(guò)去時(shí)與現(xiàn)在完成時(shí)的區(qū)別：

　　凡是有明確的表示過(guò)去的時(shí)間狀語(yǔ)的句子為過(guò)去時(shí)

　　注意：有些動(dòng)詞表示的動(dòng)作有一個(gè)終點(diǎn)，不能再延續(xù)，因此不能和表示一段時(shí)間狀語(yǔ)連用

　　錯(cuò)：I’ve left Beijing for 3 days.

　　對(duì)：I left Beijing 3 days ago. I have been away from being for 3 days.