什么是run-on sentence？
A run-on sentence is a sentence in which two or more independent clauses (that is, complete sentences) are joined without appropriate punctuation or conjunction. It is generally considered to be a grammatical error though it is occasionally used in literature and may be used as a rhetorical device. An example of a run-on is a comma splice, in which two independent clauses are joined with a comma without an accompanying coordinating conjunction.[1][2] Some grammarians exclude comma splices from the definition of a run-on sentence[3], though this does not imply that such usage is acceptable.
The mere fact that a sentence is long does not make it a run-on sentence; sentences are run-ons only when they contain more than one complete idea. A run-on sentence can be as short as four words—for instance: I drive she walks. In this case there are two complete ideas (independent clauses): two subjects paired with two (intransitive) verbs. So long as clauses are punctuated appropriately, a writer can assemble multiple independent clauses in a single sentence; in fact, a properly constructed sentence can be extended indefinitely.
简而言之，run-on sentence是指句子之间或独立子句之间句号省略而标点错误的句子。
说白了，就是在英语中不能用逗号连接两个句意及结构都完整的独立的句子。
该用句号的地方，你用的是逗号。
run out和run out of的用法有什么区别
区别：1、两个词组作用光、用尽 之意时，从词性来说由于多了一个of，run out of变成了相当于及物动词，而run out 是相当于不及物动词 。最重要的不是他们的主语,而是他们后面的成分. run out of 可以有宾语, 但是是介词宾语, 所以没有被动语态. 例如：The water had run out.水已经被用掉了。Tom has run out of the water.汤姆用完了水。2、意思不完全相同run out：1.跑出去；匆匆离开：sb run out to do sth Lots of students ran out to see what had happened.许多学生跑出去看发生了什么事情。2.(液体)流出：The water runs out at the other end of the pipe.污水每天从管道中流出来。3.到期，期满：Our contract runs out at the end of the month.我们的合同在本月底到期。4.被耗尽，被用完：You'd better go home before your money runs out.你最好别等钱花光再回家。run out of：1.从…跑出来： Sb run out of .....,All the students run out of the classrooms as soon as the bell rings.铃声一响，学生们都从教室里跑出来。2.(液体)从…流出：Filthy water runs out of the pipe every day.污水每天从管道中流出来。3.耗尽，用完： sb run out of sthWe ran out of coal,and had to burn wood.我们的煤用光了，只好烧柴。4.[美国英语]强迫离开；驱逐出…：They ran the spies out of the country.他们将间谍驱逐出境。 扩展资料Run其他的短语1、Run away 逃跑；失控2、run on 继续，继续下去；连续不断；流逝；涉及3、run out 用完；耗尽；跑出；到期；伸向4、on the run 在逃；奔波；跑着5、run into someone 偶然遇见某人6、run into 遭遇，陷入；撞上，撞到；偶然遇见7、run for 竞选；匆匆去取；赶紧去请8、run through 跑着穿过；浏览；刺；挥霍9、in the short run 从短期看，在不久的将来10、run out of 用完11、run with 鼓励；与…一起跑；与…交往12、run wild 失去控制；变得荒芜13、run at 冲过去袭击14、run from 逃避，飞奔以逃离15、run counter to 违反；与…背道而驰16、run time 运行时间；电脑运作时间17、run off 逃跑；印出；流掉；进行决赛
什么是run-on sentence
run-on sentence为一种化学现象，又称增效作用，是指两种或两种以上的组分相加或调配在一起，所产生的作用大于各种组分单独应用时作用的总和。而其中对混合物产生这种效果的物质称为增效剂(synergist)。协同效应常用于指导化工产品各组分组合，以求得最终产品性能增强。run-on sentence作用：生产上开发的增产菌，就是基于这一作用而来，除能控制作物病害导致间接增产之外，其本身还可产生激素，增强植物的光合效力，提高其抗逆性和延缓衰老，直接使植物增产。是对人、畜和环境安全，促进农业生态良性循环的植病生防手段。传播学认为，在小群体语境下，更多的人可以为群体的目标做出贡献，在解决问题的群体或完成任务的群体里，多种看问题的视角具有优势，这种小群体从多种视角交换中获得好处被称作增效作用（synergy）。经济学上的增效作用：增效作用（Synergy） 因收购而产生的额外价值，就称为增效作用(Synergy，协同效应)。增效作用可以表现为成本的节约，也可以表现为知识和技能的有效结合和传播，比如两家公司结合之后，可以生产出之前两家公司单独无法生产的产品。当然，这类的增效作用的效果是很难衡量的。
square用on还是in
一、on表示在“面”上,in表示在“范围”内.
He is walking on the square.表示“他在广场上散步（步行/行走）”.等一会,他就可能正在街道上走了.
He is walking in the square.就是 “他在广场散步”.走来走去但不会出广场这个范围.
Whi is in the big square?中的BE动词是静态的,人在这个“大广场”中,显得很渺小,用"in"比用on好.
