necessary是一个雅思常考词汇，这个词的常用解释为a. 必需的， 必要的； 必然的n. 必需品，这个词在很多英文原版小说中怎么应用呢，今天小编就带您了解一下。
在儒勒·凡尔纳的《海底两万里》里，有这样的句子出现：
-- It ran as follows:"After examining one by one the different theories, rejecting all other suggestions, it becomes necessary to admit the existence of a marine animal of enormous power.
-- It will have the proportions determined by the officers of the Shannon, the instrument required by the perforation of the Scotia, and the power necessary to pierce the hull of the steamer.
-- It became really necessary to communicate with the beings, whatever they were, shut up inside the machine.
-- It became necessary to renew the atmosphere of our prison, and no doubt the whole in the submarine boat.
-- But you must understand that, in pursuing you over the high seas of the Pacific, the Abraham Lincoln believed itself to be chasing some powerful sea-monster, of which it was necessary to rid the ocean at any price."
在戴维·赫伯特·劳伦斯的《恋爱中的女人》里，有这样的句子出现：
-- "It is one of the necessary incentives to production and improvement."
-- But they're necessary for the common ruck.
-- It was necessary to go back into the world.
-- "If you were quite true, it wouldn't be necessary to be so far-fetched."
-- The whole system was now so perfect that Gerald was hardly necessary any more.
在艾米利·勃朗特的《呼啸山庄》里，有这样的句子出现：
-- He had his private manner of interpreting the phrase, and it seemed necessary the brother should sin different sins on every occasion.
-- I had remarked on one side of the road, at intervals of six or seven yards, a line of upright stones, continued through the whole length of the barren: these were erected and daubed with lime on purpose to serve as guides in the dark, and also when a fall, like the present, confounded the deep swamps on either hand with the firmer path: but, excepting a dirty dot pointing up here and there, all traces of their existence had vanished: and my companion found it necessary to warn me frequently to steer to the right or left, when I imagined I was following, correctly, the windings of the road.
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