常见的用法是have done和have been done,have done是主动形式的现在完成式,have been done是被动式的现在完成式。 1、done的含义及相关短语用法 形容词adj.已完成的;煮熟的;合乎礼仪的;合乎规矩的感叹词表示接受建议)动词·做(do的过去分词);干。 must+have+done:表示...
Sth. need doing 某事需要被做= need to be done 这种情况下应注意两点: ①.主动形式的动名词doing具有被动的含义;②.该动名词可以改为其动词不定式的被动形式而句子的意义不变。例如:. Your car needs washing. = Your car needs to be washed. 你的车需要洗了。 5...
1. There is no point in doing sth. There is no point (in) doing sth.表示“做某事没有作用或没有意义”, point为不可数名词。 如: There is no point in arguing further. There seems to be no point in protesting. It won’t help much...
There was no telling when she would be back。没法知道她什么时候回来。 2. There is no difficulty in doing sth结构。意为“做某事没有困难”: There is no difficulty in finding his office. 找到了他的办公室没费一点劲。 There was no difficulty in carrying...
concern oneself with/in 从事,参与 be concerned with 涉及,与—有关 concern sb/sth 和-\-有关 concerning concerned How much money i can make is not my concern. This unit is concerned with friends and friendship. There is no need to concern yourself in ...
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