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A. basic form, function, and usage
1.introduction (general/mixed)

# For present participle and past participle as adjectives, see I-E-2-a-1) past participle vs. present participle.  

(general / mixed)
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Extreme Adjectives
source: Espresso English        2017年10月18日

Compound Adjectives
source: Espresso English        2018年1月11日

adjectives and adverbs
source: BBC Learning English         2015年8月25日

What you don't know about ADVERBS
source: Englishing        2017年12月17日

The + Adjective
source: Practice English with Paul        2015年12月15日    

Learn English Adverbs  (1. What are adverbs, and what do they do? 2. What's the difference between adjectives and adverbs? 3. Are there different types of adverb? 4. How can I form adverbs? 5. Where should I put the adverb in the sentence?)
source: Oxford Online English             2015年1月21日
See the full lesson with exercises: http://www.oxfordonlineenglish...