6 Three million tons of coal ________ every year in the city. A is exploited B are exploited C had exploited D have exploited为什么选B 不是该用完成时吗?
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![6 Three million tons of coal ________ every year in the city. A is exploited B are exploited C had exploited D have exploited为什么选B 不是该用完成时吗?](/uploads/image/z/10075448-56-8.jpg?t=6+Three+million+tons+of+coal+________+every+year+in+the+city.+A+is+exploited+++B+are+exploited++C+had+exploited++D+have+exploited%E4%B8%BA%E4%BB%80%E4%B9%88%E9%80%89B+++++%E4%B8%8D%E6%98%AF%E8%AF%A5%E7%94%A8%E5%AE%8C%E6%88%90%E6%97%B6%E5%90%97%3F)
6 Three million tons of coal ________ every year in the city. A is exploited B are exploited C had exploited D have exploited为什么选B 不是该用完成时吗?
6 Three million tons of coal ________ every year in the city.
A is exploited B are exploited C had exploited D have exploited
为什么选B 不是该用完成时吗?
6 Three million tons of coal ________ every year in the city. A is exploited B are exploited C had exploited D have exploited为什么选B 不是该用完成时吗?
..首先,要注意 "every year "...因为事 every year ,所以不能用完成时,而且,即使要用完成时的话,后面也要捷been,表示被动,即have/had been exploited
coal(煤)事不可数名词
要用完成时的话后面要加been,表被动
tons 是可数名词要用are,整句是个被动语态,必须加BE动词
要用完成时也应该用完成时的被动语态啊have/had been exploited