A scrub jay can remember when it cached a particular piece of food in a particular place, researchers have discovered, and tend not to bother to recover a perishable treat if stored long enough to have rotted.
A.tend not to bother to recover a perishable treat if
B.they tend not to bother recovering a perishable treat
C.tending not to bother to recover a perishable treat it
D.tends not to bother recovering a perishable treat(D)
E.tends not bothering to recover a perishable treat it
我想请问下A为什么不对?可以看做A scrub jay can do....,and (can) do的省略呀~请教NN~~
stored long enough to have rotted作定语修饰 perishable treat 没有问题的呀,有没有if对逻辑含义都没有影响~如果要补上if,必须得把主语补出if the perishable treat was stored long enough to have rotted.