If you don't study hard, you
should fail in the test.
书上说:这里的 should 用得不对,为什么啊?
一般说来,should 可以表示预测“好”的结果。如:
正:If you study hard, you should pass the test.
但英语通常不用 should 来预测“不好”的情况。如:
误:If you don't study hard, you should fail in the test.
上面这句可改为:
正:If you don't study hard, you will probably fail in the test.
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