【GMAT语法SC大全】must和have to语法点真题分析
- 2016年03月14日10:44 来源：小站整理
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GMAT语法，又叫句子改错(sentence correction)，是整个GMAT语文(VERBAL)三大题型中难度最高却也最容易提分的题型。说它难度高，是因为英语语法向来是中国考生的软肋，特别是对于英语基础不扎实的考生来说可谓老大难问题。至于提分容易，则是因为比起出题思路天马行空、文章难度高深莫测且基本没有规律可循的阅读和逻辑来说，GMAT语法无论是考点还是难度，都更有规律，花费同样时间精力复习往往提升更为明显。如果考生们还想更多了解别的语法点，请点这里!
话虽如此，想要考好GMAT语法秒解难题还是需要花上一番功夫的。特别是对于考试涉及的各类语法点和疑难杂症，考生势必要多加努力才能有所收获。下面小编就为大家汇总整理了GMAT语法考试中出现频率最高也最容易做错的语法难题，配合实例解析，为大家每日讲解。
GMAT语法大百科每日语法点：must和have to的用法说明
1.must 助動詞
must(必須)作<情態助動詞>,相當於have to,但must強調主觀因素,而強調客觀因素。
I must go now. 我現在必須走。(我自己認為應該走了)
2.have to 助動詞
(必須)是<情態助動詞>,後接原形<動詞>,表示客觀條件決定不得不做某事。
I have to go now. (我現在不得不走了)
GMAT高频词汇must和have to用法实例讲解
Although the manager agreed to a more flexible work schedule, he said that it must be posted on the bulletin board so that both management and labor will know what everyone is assigned to do.
(A) he said that it must be posted on the bulletin board so that both management and labor will know what everyone is
(B) he said it had to be posted on the bulletin board so that both management and labor knows what everyone is
(C) he said that they would have to post the assignments on the bulletin board so that management and labor knew what everyone was
(D) he said that the schedule would have to be posted on the bulletin board so that both management and labor would know what everyone was
(E) saying that the schedule had to be posted on the bulletin board so that both management and labor would know what everyone had been
选项分析：
首先，我们需了解这句话的语境，很显然这是一个类似于命令的要求的口吻。
当发出命令或者指示的时候，must会比have to好得多。虽然有时候我们会用had to代替must做过去时态，但二者含义有差别。当需要精确表述的时候(如本题)，must不能用have to 取代。
所以最后答案是A
