[求助] ‘then’ 可以当连词吗？大全 799

799.The owner of
Steele’s Grocery in Osage, Ohio, saved $600 monthly on heat during the winter
by putting all his refrigerator air compressors together in an insulated
compartment, then installing two fans and a duct that carried waste heat
from the compressors into the main part of the store. （A）

(A) then installing
two fans and a duct that carried

(B) then he
installing two fans and a duct that carried

(C) then two fans
were installed with a duct that carried

(D) installing two
fans, and then carrying through a duct

(E) installing two
fans, and a duct carrying

不懂MM什么意思

我感觉installing的逻辑主语应该是the owner，逻辑上讲putting 和 installing 似乎一先一后的感觉

then 应该做adv

哪位NN能分析一下句子成分？

The
owner of Steele's Grocery in Osage, Ohio, saved $600 monthly on heat
during the winter by putting all his
refrigerator air compressors together in an
insulated compartment,
            then
            installing
two fans and a duct that carried waste heat from the compressors into the main
part of the store.

这一题就句意解释会比较清楚。

店主省下钱，方法将冷气put在某处然後install电扇，将冷气产生的多馀的热送回店内。是有一个动作先後的。