“大约”的英文表达有： must、should、ought to、be supposed to 、be bound to、had better、want。

ought to 偏重反映客观情况，多在触及法令、道义、责任、责任或原则时运用。

should 偏重自个的片面观点，口气比ought to稍弱一些。

be supposed to 意为“大约、被期望、理应”,用来标明根据规则或传统习气我们不得不做的事。

want(用于提出主张)大约 ;多用于口语

must标明责任、意图或主张：有必要，大约。

must

释义：

aux. 有必要；必定；大约，得

n. 必定必要的事物；待发酵的葡萄汁；发霉，潮气

You must go and see that film——you’d really enjoy it.

你得去看看那部影片，你会真的喜爱它的。

Accurate records must be kept.

有必要保存精确的记载。

should

释义：

aux. 大约；就；可以；即将；本当；竟然

例句：

You should tell the truth to the public.

你大约将底细公之于众。

ought to

释义：

大约

例句：

You ought to give up smoking.

你大约戒烟。

be supposed to

释义：

大约；被期望

例句：

Therefore in implements the multimedia teaching in the process to be supposed to pay

attention to some questions.

所以在施行多媒体教育的进程中大约留心一些疑问。

be bound to

释义：

必定；必定要

例句：

He’ll be bound to find out what the skipping-rope is.

他必定会弄理解跳绳是啥。

had better

释义：

最佳；大约

例句：

You had better travel to

Nova Scotia tomorrow.

你最佳明日去新斯科舍。

We had better learn by heart as many sentence patterns as we can.

咱们最佳尽可以多背句型。

want

释义：

vt. 需要；期望；大约；短少

n. 需要；短少；贫穷；必需品

vi. 需要；短少

例句：

The computer wants repairing.

这台电脑需要修补。

We will try our best to meet your wants.

咱们会尽量满足您的需要。