what the effects (that)changes in working conditions would have on workers' performance are不懂为什么要补这个are , the effects的谓语不是would have on 吗?-- by 会员 maggie0406 (2009/10/8 23:30:00)
对啊,主语从句的谓语动词应该用单数嘛不是 -- by 会员 kathy1989717 (2010/3/23 0:11:21)
不对不对!! what the effects (that) changes in working conditions would have on workers' performance are
that 后面跟的是修饰effects的从句,所以what从句没有谓语,要加are~~
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