adv.是副詞，為adverb的縮寫。adverb的縮略形式為adv. 也有些詞典表示為ad.還可以表示為a.。副詞是一種用來修飾動詞、形容詞、全句或其他副詞的詞，說明時間、地點(diǎn)、程度、方式等概念。

副詞的位置

1.在動詞之前。

2.在be動詞、助動詞之后。

3.多個助動詞時，副詞一般放在第一個助動詞后。

注意：

①大多數(shù)方式副詞位于句尾，但賓語過長，副詞可以提前，以使句子平衡。

We could see very clearly a strange light ahead of us.

②方式副詞well，badly糟、壞，hard等只放在句尾。

He speaks English well.

副詞的分類

副詞可分為：地點(diǎn)副詞、方式副詞、程度副詞、疑問副詞和連接副詞等。

1.時間副詞：常見的有now, then, soon, ago, recently, lately, later, before, early, today, tomorrow, yesterday, tonight, suddenly, immediately, still, already, just等。

2.地點(diǎn)副詞：常見的有here, there, up, down, away, nearby, home, ahead, abroad, indoors, overseas, upstairs, downstairs等。

3.方式副詞：表示行為方式的副詞大多以-ly結(jié)尾，常見的有quietly, heavily, warmly, carefully, happily, politely, angrily等。

4.頻度副詞：常見的有always, usually, often, frequently, constantly, occasionally, sometimes, seldom, hardly, rarely, never等。

5.程度副詞：常見的有fairly, pretty, rather, quite, very, much, too, greatly, almost, nearly, half, highly, deeply, partly, perfectly, really等。

6.焦點(diǎn)副詞：就是通過強(qiáng)調(diào)使之成為人們注意的焦點(diǎn)的副詞，常見的有：only, alone, also, even, just, merely, simply, mainly, especially, exactly, too, as well等。

7.連接副詞：這類副詞有相當(dāng)于并列連詞的therefore, besides, otherwise, however, moreover, furthermore, still, thus, meanwhile等，也有引導(dǎo)名詞性從句或不定式的when, why, where, how等。

8.關(guān)系副詞：就是引導(dǎo)定語從句的when, where, why等。

9.疑問副詞：就是用于引出特殊疑問句的when, where, why, how等。

10.句子副詞：就是修飾整個句子，表達(dá)說話人的觀點(diǎn)態(tài)度的副詞，常見的有frankly, honestly, clearly, obviously, evidently, generally, briefly, fortunately, luckily, unexpectedly, naturally, hopefully等。