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how long和how often的区别

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long

Long,英语单词,主要作为形容词、副词、名词、动词,作形容词时意为“长的;长时间的;远的;长音的;(人)高的;持续的;冗长的;记得牢的;较大量的;远期(获利)的”,作副词时意为“长期地;(某事之前或之后)很久地;(时间名词后)整个时间;远地”,作名词时意为“长时间;长音;远期证券;(服装的)长尺寸;长裤,(美、英、爱)隆(人名)”,作动词时意为“渴望,盼望”。

often

(1)表示“经常”,通常放在行为动词之前,特殊动词(助动词、情态动词以及动词be)之后。如:

He was often late for class.他上课经常迟到。

We often go skating together.我们常常一道去溜冰。

You must often come to see us.你要常来看我们。

(2)如果句子较短或为了强调,often可以放在句末。如:

You won’t see her often.你不会常常看到她的。

如果句子较长或为了强调,often也可以放句首。如:

Often I miss breakfast and have an early lunch instead.我常常不吃早餐,而吃一顿早午餐。

有时位于句首或句末是因为本身带有修饰语(如quite, very, so等)。如:

Quite often the phone rings when I’m in the bath.电话经常在我洗澡时响。

When I was young, I used to play tennis very often.我年轻时经常打网球。

(3)有时often不是用于说明句子中的动词,而是用于说明整个句子的,此时也通用于句首。如:

Often, in the evening, we’d hear the sirens.常常我们会在傍晚听到警报声。

Often, when he should have been doing something useful, he wasted his time drawing little pictures.常常当他应当干些正经事时,他却浪费时间画小画。

(4)often置于句首时,有时其后可接倒装语序(但这并不是必需的)。

标签:区别howlong