作文句子分享

1. It must be pointed out that it is one of our basic State policies to control population growth while raising the quality of the population。 　　2. It is (has been) estimated that the world's population could reach 6 billion by the end of the century。 　　3. It must be kept in mind that there is no secret of success but hard work。 　　4. It can be seen from this that there is no difficulty in the world we can overcome. 　　5. As is known man is the product of labour。

虚拟语气情态*所表达的可能性程度：must/can't should/shouldn't might/may (not) 另外两个"类情态词的形 式："need/needn't; have to/don't have to 最自然的虚拟状态：由 should/would 原型时态（不含时间只含状态）本质上是过去将来时：即， 时间固定在过去将来，状态不同：一般、进行、完成、完成进行。 这时"虚拟语气"的产生往往是因为我们要表达"本来应该……"（而 现在却还没有……）（本来可以……，本来能……） I should go! (… but I'm still here!) (一般) I should be working now! (进行) I should have practiced more (than I did)! (完成) 我应该多多练习！ （言下之意，现在我练习得不多。） I shouldn't dream away my time too much! (完成的否定) (actually I did dream away my time too much!) It shouldn't have been leaking for such a long time! (完成进 行) I may/might/could have finished! (完成) 一些常见的句型中， 就会出现这种虚拟语气，而处于从句之中，should 常常被省略掉 o suggest, advise, propose, recommend, plan; o demand, order, direct, arrange, command, decide; o require, request; o think, expect, believe, insist, suspect. 由于他们的含义中包含"建议，假设，应 该"这类的含义，所以，由他们引起的从句中，就会包含有 should 原型时态构成的虚拟语气。这些*（以及他们的名次形式，分 词形式）引起的从句还有其他的变形：主语从句，表语从句，同 位语从句 It's suggested that… My suggestion is that… The only suggestion that... The only suggestion I can give you now is that… 一些形容词引起的表语从句中，也会有同样的情况