Final answer:
For the adjective word chain, the adjectives following 'dangerous' are 'serene', 'effective', 'tricky', and 'youthful'. The phrase 'down to earth' can be used to describe someone who is humble. Sorting words into groups requires understanding their spelling and structure origins.
Step-by-step explanation:
Understanding Word Forms and Sentence Structures::
For the word chain of adjectives, we can start with the word 'dangerous' and add four adjectives each beginning with the last letter of the previous adjective:
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- (a) Serious
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- (b) Efficient
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- (c) Tricky
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- (d) Youthful
To use the phrase 'down to earth' in a sentence, we could say: "Despite her fame, the actress remained down to earth, always taking time to talk to her fans." This exhibits the use of the phrase in the context of someone who is humble and approachable.
When it comes to sorting words into different groups based on their structures or parts of speech, such as those with a double 'd' or those forming compound words or using the prefix 'ad-', it is important to understand the origin of their spelling and structure.
For instance, 'addition' has a double 'd' due to it being a compound word formed from 'ad' (toward, addition to) and 'ition' (process).
Identifying nouns, adjectives, verbs, and adverbs in sentences is crucial for understanding sentence structure and the function of words within a sentence.