can't have been,must have been 結(jié)構(gòu)里是不是不要把have been當(dāng)現(xiàn)在完成時(shí)看,就把它當(dāng)成一個(gè)結(jié)構(gòu)來使用?
can't have been,must have been 結(jié)構(gòu)里是不是不要把have been當(dāng)現(xiàn)在完成時(shí)看,就把它當(dāng)成一個(gè)結(jié)構(gòu)來使用?
英語人氣：352 ℃時(shí)間：2020-02-06 06:07:13
優(yōu)質(zhì)解答
have用于“情態(tài)動(dòng)詞＋have＋過去分詞”的結(jié)構(gòu),有 推測、假設(shè)之意.1.must＋have＋過去分詞,表示對(duì)過去時(shí)間發(fā)生的動(dòng)作或存在的情況的推測,一般用于肯定句.Her father thought that she must have met a fairy.You must...
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