名詞性從句是指賓語(yǔ)從句、主語(yǔ)從句、表語(yǔ)從句和同位語(yǔ)從句。從句的謂語(yǔ)動(dòng)詞需用(should+)動(dòng)詞原形表示虛擬?忌鷳(yīng)熟悉:
(1)下列動(dòng)詞做謂語(yǔ)時(shí)醫(yī)學(xué)全在,線gydjdsj.org.cn,that賓語(yǔ)從句中的動(dòng)詞用虛擬形式:
desire, advise, recommend, command, direct, order, ask, demand, request, require, insist, maintain, move, propose, prefer, urge, vote。如:
In the past men generally preferred that their wives work in the home.
I move that he be discharged for his serious mistake.
(2)下列形容詞和分詞做表語(yǔ)或補(bǔ)語(yǔ)時(shí),that主語(yǔ)從句中動(dòng)詞用虛擬形式:
advisable, desirable, insistent, preferable, urgent, appropriate, compulsory, crucial, essential, imperative, important, necessary, obligatory, possible, probable, proper, vital, advised, arranged, commanded, demanded, desired, ordered, proposed, recommended, requested, required, suggested。如:
The board deem it urgent that these files should be printed right away.
It is essential that all these figures be checked twice.
(3)下列名詞接同位語(yǔ)從句或表語(yǔ)從句時(shí),從句中動(dòng)詞用虛擬形式:
insistence, preference, recommendation, suggestion, proposal, motion, desire, re-quirement, request, order, necessity, importance, regulation, rule, resolution, understanding。如:
John Wagner’s most enduring contribution to gydjdsj.org.cn the study of Afro-American poetry is his insistence that it be analyzed in a religious, as well as worldly, frame of reference.
They keep telling us it is of utmost importance that our representative be sent to the conference on schedule.
3.含蓄虛擬條件句的謂語(yǔ)動(dòng)詞形式
含蓄虛擬語(yǔ)氣是指假設(shè)條件不通過(guò)if從句表達(dá),而是暗含在其他結(jié)構(gòu)中?忌鷳(yīng)熟悉:
(1)連詞but, but that, or, or else;副詞otherwise, unfortunately等表示轉(zhuǎn)折假設(shè)。如:
A safety analysis would have identified the target as a potential danger. Unfortunately, it was never done.
Victor obviously doesn’t know what’s happened; otherwise he wouldn’t have made such a stupid remark.