negative adverb

2. Which sentence shows correct use of the negative adverb barely?
1. Which negative adverb does not mean the same as the other three?

negative adverb, Language Skills Abroad

We normally use hardly … when, barely … when, scarcely … when, and no sooner … than in narratives with past perfect in the inversion.
If you are in doubt, it’s always useful to look at the sentence without the negative adverbial at the beginning.

Only when I had arrived did I realise I had left my dossier at the office.
Only when had I arrived I realised I had left my dossier at the office.

Negative adverbs are used to make negative statements. English negative adverbs include no, not, never, and nowhere. This lesson explains how to form negative statements using these adverbs.
For statements that use an auxiliary verb, for example HAVE or a modal verb, the adverb not is placed between the auxiliary verb and the main verb.

negative adverb, Language Skills Abroad
He didn’t want to wait for us. And he didn’t want to leave a message.
He didn’t want to wait for us. Nor did he want to leave us a message.
I have never heard such a story.
Never have I heard such a story.

Resources:

http://www.test-english.com/explanation/b2/inversion-negative-adverbials/
http://www.hornerschool.com/inversion-negative-adverbials/
http://www.lawlessenglish.com/learn-english/grammar/negative-adverbs/
http://blogs.transparent.com/ingles/2014/09/19/advanced-english-inversion-with-negative-adverbs-and-adverbial-phrases/
http://membean.com/wrotds/ante-before