Now that final exams are history, you seem to have that extra bounce.
期末考试已经成为过去式，你们看起来格外有活力。
Smartphones and tablets have made expensive pens passe to business executives in many parts of the world.
对于世界许多地方的商界高管，智能手机和平板电脑已经让昂贵的钢笔成为了过去式。
For the word speed, for example, a past-tense change from sped to speeded may have been accelerated by a shift in the word's meaning from "to move rapidly" towards "to exceed the speed limit."
例如speed，它的过去式从sped变为speeded，这可能是因为该单词的意义由“快速移动”到“加速”的转变。
You have become the past tense.
你已成为过去式。
The exam will be about 25 verbs and the students will have to know both PT and Base form's spelling.
考试将涉及25个动词，同学们需要掌握原形和过去式的拼写。
Researchers at home and abroad have found that the English past tense can only be acquired at a later stage in the developmental pattern.
国内外研究者大量的研究表明一般过去式通常难以被二语学习者习得。
Even though we could afford it, we didn't have time to go abroad for our holidays.
即使我们支付得起，我们也没时间去国外度假。为什么用过去式呢。
Even though we could afford it, we didn't have time to go abroad for our holidays.
即使我们支付得起，我们也没时间去国外度假。为什么用过去式呢。
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