一些想法和查到的资料想和大家讨论 ※ 引述《invisibleya (inv)》之铭言： : 1. Nutritionists recommend that each individual take sufficient amounts : of vitamin C so that may he may not contract svurvy as well as other : diseases attributed to the lack of the nutrient. : 第一行中的take是否应该要用第三人称单数 即takes 文法书中多半会提到下面几个动词用法有些特别： ┌ suggest ┐ │ propose │ ┌ should + infinitive 其句型是 S + │recommend│ + (that) + S + │ infinitive │ insist │ └ V (past form) └ demand ┘ [the subjunctive] -----------------可以跳过----------------- The subjunctive mood is a verb mood typically used in dependent clauses to express a wish, emotion, possibility, judgment, opinion, necessity, or action that has not yet occurred. (from Wikipedia) [to own] [to be] Present I own I am indicative he/she/it owns he/she/it is we/you/they own we/you/they are Present I own I be subjunctive he/she/it own he/she/it be we/you/they own we/you/they be Past I owned I was indicative he/she/it owned he/she/it was we/you/they owned we/you/they ware Past I owned I were subjunctive he/she/it owned he/she/it were we/you/they owned we/you/they were Future I will/shall own I will/shall be indicative he/she/it will own he/she/it will be we/you/they will/shall own we/you/they will be Future I were to own I were to be subjunctive he/she/it were to own he/she/it were to be we/you/they were to own we/you/they were to be -----------------可以跳过----------------- 所以题目中的take不需用takes 但我没看到书上说这些动词不允许用一般的that clause形式，也就是你写的这个问题 不过我也没看过说可以用的说法就是了，另外会有文法的题目将 -s 的选项视作错的 补充一下，後面也不能 + somebody to do something，不像ask, tell 好像文法中也常考这个规则，但我也没在书上看到为什麽不能用 另外suggestion/proposal/recommendation important/vital/necessary/essential/desirable/imperative 後面也可以用that (should) infinitive的形式 例：What do you think of Jane's suggestion that I should buy a car? It's essential that you should be here on time. : 2. Historians are still mystified by the question how some ancient : civiliztions disappeared suddenly in history. : 第一行中的how为何不能使用why 这题是选项一个用how开头，另一个用why起始吗？ 我自己是觉得这个的句子将how改成why意思仅改变一些 而且不管那些historians问how~或why~，简单回答起来都差不多 : 3. __________, the cell bodies that control the heredity of an animal or : a plant. : (A) DNA is the chief material in chromosomes : (B) The chief material in chromosomes is DNA : (C) In chromosomes DNA is the chief material : (D) In chromosomes the chief material is DNA : 正确答案是A 想请问其他选项为何不行 这题除了问英文用法，也是考科学的想法吧 XD 就comma後面的叙述你觉得是指chromosome还是DNA 选择那一个就将那个字放在comma前面 这个用法和平常说的同位语、关系代名词的restrictive clause都是用来做为补充说明 会将要说明的该对象置於comma前 另外如果你能接受後面那个是指DNA的话，也就是将DNA放在comma前面 那(B)和(D)都可以了，但单复数需修正，而要用(C)的话，可以改成 In chromosomes DNA is the chief material that controls the heredity of ... 但就意思上到底是chromosome对，还是DNA，我觉得争这个是没多大意义就是了 --

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