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student asking question

我已经吃了一口了,不能用过去时吗?

teacher

母语人士的回答

Rebecca

如果你在这里使用过去时,听起来就不自然了!因为,当厨师仍然一只手拿着三明治时, what is this?因为说起来更自然。特别是因为this指的是一只手拿着的三明治。如果厨师咬了一口三明治,马上放下,那what was that?没关系的说示例: What was the cake they had in the cafe window? (他们在咖啡馆窗口吃什么样的蛋糕?) 例如: Wow! What is this delicious meal? How did you make it? (哇!这是什么好吃的东西?你是怎么做的?) 例如:那What was that? It flew past us so fast. (那是什么?它很快就超过了我们。) 例如: Dan, what is this that we're drinking? Decaf or caffeinated coffee? (丹,我们现在喝什么?是不含咖啡因的咖啡还是只是咖啡?)

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12/14

通过测验完成表达式!