He knows that even if he gets a dog pregnant, the offspring, should they survive, will face the problems shown at birth by other cloned animals: abnormalities like immature lungs and heart and weight problems.句中的倒装是虚拟语气吗?这句是怎样插入全句的?怎样还原?
A passerger will step up and tell me which flight they intend to be taking that day--whether they have a ticket or not. If they've got a ticket i can issue the ticket right there at the ticket counter.请问这里的intend to be doing 属于什么用法? 和intend to do 有什么不同吗?