as we all know还是known
是as we all know,as是连词,后接句子,而as we all known中known是过去分词不能做谓语,不是句子。 as we all know 众所周知;正如我们所知; But as we all know, of all these alternative fuel vehicles, the most practical are electric vehicles. 但我们都知道,在所有可以替代燃料汽车的选择中,最实际的是电动汽车。 Stratford-on-Avon, as we all know, has only one industry—William Shakespeare—but there are two distinctly separate and increasingly hostile branches. 我们都知道,斯特拉福镇只有一个产业——威廉·莎士比亚,但这里有两个泾渭分明、而且越来越敌对的群体。 As we all know, the "rice bowl" culture of China has influenced some Asian countries such as Japan, Korea and Vietnam since we started to use chopsticks while eating food. 众所周知,自从我们开始使用筷子吃饭以来,中国的“饭碗”文化已经影响了一些亚洲国家,如日本、韩国和越南。 As we all know, no one is perfect. 我们都知道,没有人是完美的。 As we all know, the computer is a marvelous machine. 众所周知,计算机是神奇的机器。 As we all know, water is essential in our daily life. 我们都知道水对于日常生活的重要性。 As we all know, end users get sick and tired of waiting. 最终用户都不愿等待,我们都明白这一点。 However, as we all know, we don't live in an ideal world. 不过,我们都知道,我们并不是生活在理想的世界中。 Of course, as we all know, development rarely ends there. 当然,我们都知道,开发远远没有结束。 As we all know, a base reacts with an acid to form a salt. 众所周知,碱与酸反应生成盐。 |
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be动词是系动词吗
系动词包括be动词,并不是所有的系动词都是be动词,亦称连系动词,是用来帮助说明主语的动词,特殊疑问句的be动词必须是放在主语的前面,大家看这里的必动词are就放在主语前面,这个句子的必动词is放在主语前面。be动词不一定是谓语动词,be动词是谓语动词里的一种,作谓语动词也只是be动词的一种作用,它才是谓语动词,谓语动词指的是在句子中可以单独作谓语的动词。某些动词短语也可以是谓语动词。
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contact sb 还是contact with
若句中contact作动词词性时是及物动词时,动词词性时不及物动词时,They are in twice daily radio contact with the rebel leader.他们一天两次通过无线电通信系统与反叛者领导人保持联系。我从未和他失去联系。