Question

16. Dad has given up smoking, saying he just did        . ten years ago. (do)

爸爸戒煙了，說(shuō)自己只是做了十年前就該做的事。

Answer 1

16. what he should / ought to have done考查虛擬語(yǔ)氣和賓語(yǔ)從句結(jié)合的用法.，從全句來(lái)看，本句考查的是以what引導(dǎo)的賓語(yǔ)從句，且本題表述的就是對(duì)原來(lái)發(fā)生的事實(shí)進(jìn)行虛擬，因此用what he should / ought to have done。類(lèi)似用法還有：should / ought to have done本該做，而實(shí)際上未做5shouldn't / oughtn't to have done本不該做，而實(shí)際上做了；could have done本來(lái)能做，而實(shí)際上未做；needn' t have done本不必做, 而實(shí)際上做了；may / might have done過(guò)去可能做過(guò)/發(fā)生過(guò)。