1.At present,about 300 (different) varieties (of dinosaur) have been identified from (bones found) on (every) of the con

1.At present,about 300 (different) varieties (of dinosaur) have been identified from (bones found) on (every) of the continents.
錯誤的是D,every.為什么?dinosaur不應(yīng)該變成dinosaurs嗎?
2.By 1996,the US population (exceeded) 261 million,with a median (age of) thirty-four,(making) it one of the oldest national (population) on earth.
錯誤的是D,exceeded 不用改成had exceeded嗎?
3.Missouri is a (heavily) industrialized state (whose) (leading) products are transportation equipment,processed food,and (chemical).
為什么?

英語人氣：390 ℃時間：2020-05-09 21:56:18

優(yōu)質(zhì)解答

1.every不能做代詞,只能做形容詞,所以當(dāng)它用在介詞of前面的時候,應(yīng)該是every+名詞+of...
跟它意思相近的“each”就可以做代詞,所以這里應(yīng)該用each.dinosaur應(yīng)該也是用復(fù)數(shù)的,這里可能有兩處錯誤.
2.by+時間,=no later than 不遲于…….不一定要用完成時的.
比如說：Be here by four o'clock.四點(diǎn)鐘之前到這兒.
當(dāng)然在那個句子里,我們肯定還是習(xí)慣用完成時態(tài)的.
3.chemical是形容詞,前面幾個并列的單詞都是名詞,所以改成chemistries

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1.At present,about 300 (different) varieties (of dinosaur) have been identified from (bones found) on (every) of the con

精品偷拍一区二区三区,亚洲精品永久码,亚洲综合日韩精品欧美国产,亚洲国产日韩a在线亚洲