be running for exercise 还是 running for exercisecould be running for exercise原文是这样但要写词组,奔跑锻炼身体

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berunningforexercise还是runningforexercisecouldberunningforexercise原文是这样但要写词组,奔跑锻炼身体berunningforexerci

be running for exercise 还是 running for exercisecould be running for exercise原文是这样但要写词组,奔跑锻炼身体
be running for exercise 还是 running for exercise
could be running for exercise
原文是这样但要写词组,奔跑锻炼身体

be running for exercise 还是 running for exercisecould be running for exercise原文是这样但要写词组,奔跑锻炼身体
Be running for exercise
因为Could是Can的过去式,所以后面的be动词改为原形be.
如果用在句中就是She is running for exercise .要把be带到句子中的.
所以是个词组的话要带上be,不然放句子里不通顺.

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