【題目】The environment in my hometown is improving because many trees __________ every year.

A.plantB.are plantedC.plantedD.were planted

【答案】B

【解析】

句意：我家鄉(xiāng)的環(huán)境正在改善，因?yàn)槊磕甓挤N很多樹(shù)。

考查一般現(xiàn)在時(shí)的被動(dòng)語(yǔ)態(tài)。plant種植，動(dòng)詞原形；are planted一般現(xiàn)在時(shí)的被動(dòng)語(yǔ)態(tài)；planted過(guò)去式或過(guò)去分詞；were planted一般過(guò)去時(shí)的被動(dòng)語(yǔ)態(tài)。題干句是一個(gè)主從復(fù)合句，because引導(dǎo)的是原因狀語(yǔ)從句，從句的主語(yǔ)是manytrees，與謂語(yǔ)動(dòng)詞plant之間是被動(dòng)關(guān)系，所以應(yīng)用被動(dòng)語(yǔ)態(tài)；再由everyyear可知句子時(shí)態(tài)是一般現(xiàn)在時(shí)，所以空格上應(yīng)該填一般現(xiàn)在時(shí)的被動(dòng)語(yǔ)態(tài)，其結(jié)構(gòu)為：am/is/are+及物動(dòng)詞的過(guò)去分詞，只有B選項(xiàng)符合要求，故答案選B。

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