1.when the boat again completed 在had enough time to swim out of danger 之前,所以用過去完成時(shí).
2.the noise dropped completely and the boat began to drift gently across the water.這一句話中兩個(gè)動(dòng)詞用and連接,所以時(shí)態(tài)相同,過去完成時(shí)態(tài)一般在句子中有兩個(gè)分句,其中一個(gè)與另一個(gè)有時(shí)間上的先后,一個(gè)句子用過去式的基礎(chǔ)上使用
關(guān)于新概念英語一道時(shí)態(tài)問題（救急!）
關(guān)于新概念英語一道時(shí)態(tài)問題（救急!）
關(guān)于2冊86課中的
1）...They had just had enough time to swim out of danger when the boat again completed a circle. ...中為什么后面一句不加had?即為何不是“when the boat had again completed a circle.”?
2）還有...On this occasion, however, it had slowed down considerably.The petrol had nearly all been used up. Before long,the noise dropped completely and the boat began to drift gently across the water. ... 中最后一點(diǎn)為什么不用完成式?
即為何不是“the noise had dropped completely”?這樣明明還通順一點(diǎn)?
為什么?
（答案滿意再多加分）
關(guān)于2冊86課中的
1）...They had just had enough time to swim out of danger when the boat again completed a circle. ...中為什么后面一句不加had?即為何不是“when the boat had again completed a circle.”?
2）還有...On this occasion, however, it had slowed down considerably.The petrol had nearly all been used up. Before long,the noise dropped completely and the boat began to drift gently across the water. ... 中最后一點(diǎn)為什么不用完成式?
即為何不是“the noise had dropped completely”?這樣明明還通順一點(diǎn)?
為什么?
（答案滿意再多加分）
英語人氣：172 ℃時(shí)間：2020-04-14 05:07:27
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