问题一、He has a bad cold.他患了重感冒.He has flu.他患了流行性感冒.都是感冒,为什么bad cold前面要加a,而flu不加定冠词?问题二、call the doctor 可以写成 call a doctor see a doctor 可以写成 see the doctor

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问题一、He has a bad cold.他患了重感冒.He has flu.他患了流行性感冒.都是感冒,为什么bad cold前面要加a,而flu不加定冠词?问题二、call the doctor 可以写成 call a doctor see a doctor 可以写成 see the doctor
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问题一、He has a bad cold.他患了重感冒.He has flu.他患了流行性感冒.都是感冒,为什么bad cold前面要加a,而flu不加定冠词?问题二、call the doctor 可以写成 call a doctor see a doctor 可以写成 see the doctor
问题一、He has a bad cold.他患了重感冒.He has flu.他患了流行性感冒.都是感冒,为什么bad cold前面要加a,而flu不加定冠词?
问题二、call the doctor 可以写成 call a doctor see a doctor 可以写成 see the doctor

问题一、He has a bad cold.他患了重感冒.He has flu.他患了流行性感冒.都是感冒,为什么bad cold前面要加a,而flu不加定冠词?问题二、call the doctor 可以写成 call a doctor see a doctor 可以写成 see the doctor
问题一：某人患了感冒,一般都是用have/has/get a bad cold,是固定搭配,其中的cold不再是一个形容词.而flu是一个不可数名词,所以不能加冠词
问题二：call the doctor是指打电话给说话人认识的医生或说话双方认识的医生,call a doctor泛指打电话给医生,不知道是谁,see the doctor 和see a doctor的区别一样

1,不可数名词前加上形容词就可数，可以加a.
2,结合语境，a表示泛指，the表示特指
有什么不明白的可以问，希望帮到你了

1.flu是复数名词，所以不加a。a cold是固定搭配。
2.这个问题需要通过全文来看，前文出现用the。

记住 have a cold 是固定搭配
call the doctor 可以写成call a doctor 或是see a doctor
有些英语结构是固定搭配 学习英语不能死揪题 要学习总结
希望对你有用

have a cold 是一个固定搭配 flu是一个大范围。所以不用加
问题二加THE的前提是特指。文章前面如果出现过，特指那一个那就用THE 一般其他情况用A

第一题，cold是名词，名词前面要加冠词。flu是不可数名词，前面不加a/an，
第二题，call the doctor是打电话给医生的意思，the表示特指某个医生，所以不能用a，
see a doctor指看医生，可以是任何医生，不用特指，所以不用the

排序：a,cold,has,he,bad. 问题一、He has a bad cold.他患了重感冒.He has flu.他患了流行性感冒.都是感冒,为什么bad cold前面要加a,而flu不加定冠词?问题二、call the doctor 可以写成 call a doctor see a doctor 可以写成 see the doctor He is s____now because he has a bad cold he has a bad coldHe has a bad cold为什么要加a He has a bad cold 改为一般疑问句( ) he ( ）a bad cold Max has a bad cold.He s__ a lot today He has caught a bad cold since last week改错 He has a bad cold.改为一般疑问句 He has a bad cold为什么是一般现在时? He has a bad cold for the______few weeks He has a bad cough.(改为否定句) Obviously,he has a bad cold.He sneezes so often.Obviously,he has a bad cold.He sneezes so often改成Obviously,he has been has a bad cold.He sneezes so often可以吗? He has a -----luck,he hurt himself in the face------,he is---------sad.(bad) He has a bad headache and has a high f 后面填什么单词 Obviously,he--a bad cold.He sneezes so often.A.has B.had Obviously,he----a bad cold.He sneezes so often.a.has B.has been c.had d.was Obviously,he( )a bad cold.He seneezes so often A.has B.has been C.had D.was 求一连连看算法 C 语言给定二维数组A[row+2][col+2],(row*col