Question

I would have gone to visit him in the hospital had it been at all possible, but I ________(be) fully occupied the whole of last week.

Answer 1

was　

本道題目的前半句話是對(duì)過(guò)去情況的一種假設(shè)，但事實(shí)上并沒(méi)有發(fā)生；而事實(shí)上沒(méi)有發(fā)生的真實(shí)原因是句子的后半部分由but引導(dǎo)的轉(zhuǎn)折句所表述的真實(shí)情況。因而but所引導(dǎo)的句子中應(yīng)該用表示與過(guò)去事實(shí)相符合的表陳述的時(shí)態(tài)，即一般過(guò)去時(shí)。