he ___work out in his spare time to keep fit,___he?选择B为什么,he ___w_英语解答

he ___work out in his spare time to keep fit,___he?选择B为什么,
he ___work out in his spare time to keep fit,___he?
A need ,needn't B needs to ,doesn't C needs ,doesn't D need ,don't

人气：274 ℃　时间：2020-01-30 11:15:55

解答

"need"可以做实义动词也可以做情态动词,做实义动词时 ,B中是“need to do.."的句型,这时反问句后半部分要用相应的实意带动词“do”,这里是第三人称单数形式,所以用“does”.如果选A,“need ”是作为情态动词使用...怎么区分是否是情态动词呢？