257.Having recognized(accepted/agreed with)…，it follows that …
258.Of course，if you…，you/it will…But as soon as you…，you/it will…
259.But even if it could be(has been)proved(demonstrated)that it contributes nothing to…(gets one nowhere，)it would still…
260.…would be of little use(value/importance)if…;if…;and if…(unless…;unless…;and unless…)
261.…may be①difficult，if not impossible②important，if not essential③necessary，if not absolute，…
262.No amount of indignation(patience/sacrifice/practice/hard work)can compensate(substitute/make up)for…
263.Even/Quite a minor(modest/brief/little)improvement(in-crease/knowledge/change)of…can cause(trigger off/contribute to)…
264.The smallest(slightest/modest)change(improvement/progress)can produce(bring about/lead to)…
265.Anyone with the slightest(modest/least)knowledge(common sense)of…knows(can tell)that…
266.A little(careful/better)study comparison/understanding/appreciation)of…can/will help(promote/contribute to)…
267.Who is to say when/if…，or even to say…
268.It is almost(hardly)impossible(inconceivable)that…without … 269.Hardly(Scarcely anyone/Few people)…without…
270.You/One cannot without…
271.It doesn’t matter(makes no difference)whether/that…
272.No matter how…However
273.Whatever the causes/pressures/conditions，…
274.However great the demand(urgent the need/laudable the de-sire/praiseworthy the effort)to…，and however…
275.The more…;the more…;the more…
276…never(not/hardly)…let alone(much less/to say nothing of/ not to speak/mention of)…