1..I have(already) finished my homework.but I haven't done it(yet).这两个位置不可以换吗?2...Which of the twin sisters is a doctor?...( B )are.为什么选第二个啊?A .All B.Both C.Either D.Neither
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1..I have(already) finished my homework.but I haven't done it(yet).这两个位置不可以换吗?
2...Which of the twin sisters is a doctor?
...( B )are.为什么选第二个啊?
A .All B.Both C.Either D.Neither
1、already用于肯定句,yet用于否定句,所以不可以互换.
2、all 和 both都有“都”的意思,谓语都用复数,但all用于三者或三者以上,both用于两者.根据题干,两个双胞胎姐妹都是医生,所以选B.
either 用于两者中的一个,谓语用单数,
neither指“两个没有一个,两个都不”,谓语也用单数,如:
Neither of them is teacher.
不可以,already用于肯定句,yet用于否定。(中学阶段可以这样理解)
All用于三者及三者以上,both用于两者,这两个的谓语动词用复数。
either 和neither谓语动词为单数。
1. 不可互换,already 用于肯定句中,yet 用于否定与或疑问句中
2. 谓语动词用are,主语应该用复数,both 表示两者都,而all 表示三者以上的全部
already 用在肯定的句子里。。。
yet 用在否定的意思里。。
both are doctors....两个都是医生啊。。。
如果两个都不是。。neither is...
1.yet在句子中试语气词,不可以和already换
2.twin sisters一般认为是双胞胎,是两者,所以选择both,而all是表示三者或者三者以上。
希望能帮助到你,谢谢!
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