第七讲 动词的时态与语态
动词时态考点透析
1.十种常用的动词时态句子结构。(S=主语, do= 动词原形, does=动词第三人称单数,did=过去式, doing=现在分词, done=过去分词)
一般现在时:S+do/does+...,一般过去时:S+did+...,现在进行时:S+am/is/are doing...,过去进行时:S+was/were doing...,一般将来时:S+will/shall+do...,过去将来时:S+should/would+do...,现在完成时:S+have/has done...,过去完成时:S+had done...,现在完成进行时:S+have/has been doing...,过去完成进行时:S+had been doing...
2.在时间状语从句、条件状语从句中,一般现在时表示将来,这时主句要用一般将来时态。
(1)The volleyball match will be put off if it rains.
如果下雨的话,排球赛就会推迟。
(2)If city noises are not kept from increasing,people will have to shout to be heard 20 years from now on.
如果不阻止城市噪音增长的话,20 年后人们就得大喊大叫才能让人听见。
3.一般现在时可表示主语具备的某种能力、某种性能。例如:
(1)I play pingpong quite well,but I haven't had time to play since the new year.(“会打球”是主语具备的一种能力,不会短时间内消失,用现在时)
(2)-Can I help you,sir ?
-Yes,I bought this radio here yesterday,but it doesn't_work.(doesn't work是主语的性能)
4.过去将来时和过去完成时都是相对过去时间而存在的时态,在答题时,一定要仔细揣摩上下文的时间关系。例如: