Page 53 - Practical English Usage 3ed - Michael Swan, Oxford

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Adverbs of completeness usually follow all auxiliary verbs.
I will have completely finished by next June. (NOT .. will eof'ltpletely ftatJe finished . ..)
Do you think the repair has been properly done? comment adverbs
Adverbs which give the speaker's opinion of an action sometimes go in mid-position.
I stupidly forgot my keys. She has fortunately decided to help us. focusing adverbs
These adverbs 'point to' one part of a clause.
Examples: also (see 46-47), just (see 307), even (see 189), only (see 398), mainly, mostly, either (see 175), or, neither (see 374), nor (see 374).
Your bicycle just needs some oil - that's all.
She neither said 'Thank you' nor looked at me.
He's been everywhere - he's even been to Antarctica. We're only going for two days.
She's my teacher, but she's also my friend.
The people at the meeting were mainly scientists.
Some of these adverbs can also go in other places in a clause, directly before the words they modify. For details, see the entries on each adverb.
Only you could do a thing like that. I feel really tired. adverbs of manner
These adverbs say how something happens or is done.
Examples: angrily, happily, slowly, suddenly, noisily, quietly, softly.
Adverbs of manner most often go in end position (see 23), but adverbs ending in -ly can often go in mid-position if the adverb is not the main focus of the message.
She angrily tore up the letter. I slowly began to feel better again. We have suddenly decided to sell the house.
This time next week I'll be happily working in my garden.
Mid-position (after all auxiliary verbs) is especially common with passive verbs. The driver has been seriously injured.
mid-position (details): adverbs with negative verbs
In negative sentences, adverbs generally come before not if they emphasise the negative; otherwise they come after. Compare:
I certainly do not agree. I do not often have headJ;zches.
Both positions are possible with some adverbs, often with a difference of meaning. Compare:
I don't really like her. (mild dislike)
I really don't like her. (strong dislike)
When adverbs come before not, they may also come before the first auxiliary verb; they always come before do.
1 probably wiU not be there. (OR I will probably not be there.)
He probably does not know. (NOT He tkJes probably n6t !ffl61:t!.) Only one position is possible before a contracted negative.
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I probably won't be there.
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adverb position (4): mid-position 24
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