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2018GMAT语法改错SC高频考点实例讲解 must和have to用法对比说明

小站整理2018-06-01 14:29:51

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摘要：must和have to这对冤家相信大家都不太陌生，别说是GMAT，就算是高中英语中也常会作为重要考点出现。假如你对于两者之间的区别已经有些遗忘，那么本文将结合GMAT语法难题实例为大家做用法对比具体说明。

GMAT语法中既有比较高深的语法点，也有一些相对浅析，大家可能很早以前就学过但有些遗忘的知识点，比如must和have to就是一例。下面小编就为大家结合实例具体分析两者在用法上的差别，一起来看。

GMAT语法大百科语法点：must和have to的用法说明

1.must 助动词

must(必须)作<情态助动词>,相当于have to,但must强调主观因素,而强调客观因素。

I must go now. 我现在必须走。(我自己认为应该走了)

2.have to 助动词

(必须)是<情态助动词>,后接塬形<动词>,表示客观条件决定不得不做某事。

I have to go now. (我现在不得不走了)

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

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