完整的形式应该是
be necessary for sb/sth to do sth
在不同情况下,可分为
be necessary for sb/sth
或者
be necessary to do sth
具体要看它在句子中后面跟的是名词还是不定式
所以这里是 technical training is necessary for the occupations
此题中 be necessary for 和 to的区别,为什么不能用to啊
1个回答
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