1 定義:現(xiàn)在完成進(jìn)行時(shí)表示動(dòng)作從過去某一時(shí)間開始,一直延續(xù)到現(xiàn)在,可能還要繼續(xù)下去。
2 現(xiàn)在完成進(jìn)行時(shí)的構(gòu)成:現(xiàn)在完成進(jìn)行時(shí)是由“have/has+been+動(dòng)詞的現(xiàn)在分詞”構(gòu)成
3 現(xiàn)在完成進(jìn)行時(shí)的基本句型
肯定式 I/We have been working.
疑問式 Have you been working?
簡略回答 Yes,I/we have. No,I/we haven't.
肯定式 He/She/It has been working.
疑問式 Has he/she/it been working?
簡略回答 Yes,he/she/it has. No,he/she/it hasn't.