答案是 1
1 強(qiáng)調(diào)到目前為止.has begun是現(xiàn)在完成時(shí),所以2是不對(duì)的,2指的是過(guò)去某一個(gè)時(shí)間.4沒(méi)有這個(gè)表達(dá)法.3講的是過(guò)去的過(guò)去,而語(yǔ)境所給的是現(xiàn)在完成時(shí),所以也不能用.
2
harvesting has begun earlier than usual.it____yet.
harvesting has begun earlier than usual.it____yet.
1 hasn't finished 2 didn't finish 3 hadn't finished 4 isn't finishing
請(qǐng)問(wèn)選擇哪一個(gè),及分別說(shuō)出每個(gè)為什么對(duì)與錯(cuò)
1 hasn't finished 2 didn't finish 3 hadn't finished 4 isn't finishing
請(qǐng)問(wèn)選擇哪一個(gè),及分別說(shuō)出每個(gè)為什么對(duì)與錯(cuò)
英語(yǔ)人氣：141 ℃時(shí)間：2020-06-05 13:43:05
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