I didn't know words like 'return', 'yesterday', 'tomorrow' or the days of the week the words I know now are like 'desert', 'mountain' 'tent', 'sleeping bag' and 'snake'.

他边笑边解释：“我不会用这些词汇如归来，昨天，明天或者这周。”我会用的词汇如沙漠，山脉，帐篷，睡袋以及蛇。

youdao

I didn't know his name until yesterday.

我直到昨天才知道他的名字。

youdao

I helped Daddy to dress Thomas. Then I realized he can't have Emma as a middle name, because he's a boy. I didn't know that yesterday.

我帮爸爸给汤姆斯穿衣服，然后我才意识到他的中间名字不能叫艾玛，因为他是个男孩。昨天时我还不知道呢。

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