where 在這里相當(dāng)于 on the earth=on which (which 指代地球),它作地點(diǎn)狀語
做這種題有個(gè)簡(jiǎn)單的方法直接看后面的liquid water,可以確定跟時(shí)間無關(guān),所以排除when.
如果liquid water后可直接加前面的Earth就選which,如果需要加介詞in,on等,則選where.
Earth is a rocky planet__liquid water,which is necessary for life ,can exist.
Earth is a rocky planet__liquid water,which is necessary for life ,can exist.
A.as B.when C.which D.where
答案選D,為什么?求解釋.
A.as B.when C.which D.where
答案選D,為什么?求解釋.
英語人氣：738 ℃時(shí)間：2019-11-14 06:10:29
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