He isn't at school. I think he ___ be ill. A. ca

He isn't in the school .I think he __be ill.~

must be 表肯定推测“可能是...”
can't be 表否定推测“不可能是...”
这时就不能用mustn't be

若用can则表示为“能够”等意

选A.
must be can't be

C表示肯定，他今天没来上学，我觉得他肯定生病了。

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镇江市18725353587： - Hi,Joe,is Lily_____? - Sorry,she isn't at home. - ？
戏梁促皮：[选项] A. in B. at C. front D. next

镇江市18725353587： he isn't a little boy and more 等于什么？
戏梁促皮： He isn't a little boy any more. =He is no longer a little boy. = He isn't a little boy any longer. 她再也不是小孩子了. 【俊狼猎英】团队为您解答.

镇江市18725353587： he isn't from America改为同义句是什么？
戏梁促皮： He doesn't come from America.

镇江市18725353587： He isn't at home.(改为同义句) - ？
戏梁促皮： 有一种非常地道的说法:He isn't home. 意思和He isn't at home. 一样 ,都表示他不在家.(这里home是副词,意为在家,到家...此外,还可以说,He's outside.

镇江市18725353587： isn't it(she/he)前面的动词是原形还是加什么形式mr.lee____(give)us a talk on the history of china tomorrow,isn't he?they____(fly)to the uk,didn't he? - ？
戏梁促皮：[答案] flew to the uk 看V.是过去或是未来决定

镇江市18725353587： is not 和isn't有什么不同,分别怎么用 - ？
戏梁促皮：[答案] 唯一的区别就是在 回答时 有一个情况 不能用缩写 Is she ok? 否定回答 只能用 no she is not 不能缩写 这是规定 其他的时候通用

镇江市18725353587： He isn't as tall as I.怎样划分句子成分? - ？
戏梁促皮： 你好.这是比较状语从句结构 He isn't as tall as I.由as-------as引导的句子.也可以写成:He isn't as / so tall as I am.或者:He is less tall than I am.

镇江市18725353587： he didn't think people() much attention to their clothing at that time A pay B paid - ？
戏梁促皮：[答案] B 时态要一致,主句是didn't think,一般过去时,从句也要用过去时态

镇江市18725353587： isn't it要怎么回答isn't it 要怎么回答,回答要在怎么翻译 - ？
戏梁促皮：[答案] 回答反义疑问句 肯定句:Yes,it is(是的,它是) 否定句:No,it isn't(不,它不是)

镇江市18725353587： 英语菜鸟又来问了将isn't \ am not \ can't \ don't \ doesn't 填空He likes coffee but I - -- - 3.He is eating some bread but she---She likes tea but he... - ？
戏梁促皮：[答案] 1 don't 2 doesn't 3 isn't 4 am not 方法:根据前半句的动词及后面的人称来决定. 如果不明白,请再问;如果对你有所帮助, 请点击本页面中的“选为满意回答”按钮,谢谢!