常用詞語(yǔ)結(jié)構(gòu)有：
if … , (then) … 如果…， (那么)…
should / had / were + NP + V … 假如…；假若…
only if … 唯一的條件是…；只要…
in case ... 假使…；假若…
in case of + NP 如果發(fā)生…；假如…
in the event of + NP 如果發(fā)生…；萬(wàn)一…
on condition of + NP 在…的條件下；如果…
on condition that ... .在…條件下；條件是…
- ing 結(jié)構(gòu)
assuming / presuming + NP / that...假定…
given + NP/that ... 假定…；如果有…；如果已知…
granted that ... 假定…；即使…
provided / providing + (that) ...以…為條件；假如…
suppose / supposing+(that) ... 假定…
so/as long as ... 只要…
unless ... 除非…；如果不…；如果沒(méi)有…
but for + NP 若不是…；如果沒(méi)有…
but that ... 要不是…
let + NP + be + NP 假定…；設(shè)…
the assumption is made that ... 假定…
subject to + NP 在…條件下
If this problem is to be solved , (then)much more research needs to be done.
如果要解決這個(gè)問(wèn)題， (那么)還需要進(jìn)行更多的研究?？萍加⒄Z(yǔ)表達(dá)常用句型速查
Had further tests been carried out , the fault would have been discovered .
要是作了進(jìn)一步的試驗(yàn)，毛病可能就發(fā)現(xiàn)了。
In the event of / In case of fire , a11 workers will leave the building .
如果(萬(wàn)一)發(fā)生大火，全體工人都要離開大樓。
Using these Values of temperature , the value of x can be found .
如果利用這些溫度值，便可求出 x 的值。
Assuming radiation losses to be 5％， Calculate the amount of steam required …
假定輻射損耗為 5％，試算出…所需蒸汽的量。
Given an efficient heat transfer system , a reactor can be used to produce power.
如果有有效的傳熱系統(tǒng)，反應(yīng)堆便可用來(lái)發(fā)電。
The law is true provided that the physical conditions of the circuit remain constant.
如果電路的物理?xiàng)l件保持不變，這一定律是正確的。
Suppose that we observe the same object in two different experiments.
假定我們?cè)趦蓚€(gè)不同的實(shí)驗(yàn)中觀察同一物體。
So long as both magnet and coil remain stationary no current is produced.
只要磁鐵和線圈兩者均保持靜止，就不會(huì)產(chǎn)生電流。
An observer will not see a rainbow unless there are drops of water suspended in the air.
如果沒(méi)有小水滴懸在空中，觀察者就看不到彩虹。
But for the luminosity of this substance it would be difficult to detect its properties.
要不是這種物質(zhì)具有發(fā)光性，要檢測(cè)其特性將會(huì)很難。
Let P1 be the initial pressure.
設(shè) P1 為初始?jí)毫Α?/p>
Subject to the proviso that/Provided that new sources of power are exploited on a wide scale , present supplies of organic fuel are not likely to exhausted in the foreseeable future.
如果大規(guī)模地開發(fā)新能源，目前已知的有機(jī)燃料儲(chǔ)量在可以預(yù)見到的未來(lái)就不可能耗盡。
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