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efficient
UK
/ɪˈfɪʃ.ənt/
US
/ɪˈfɪʃ.ənt/
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Explain how “efficient” differs from “effective,” using the software example.
Show common collocations with “efficient,” such as “an efficient system” and “energy-efficient.”
Explain the patterns “efficient at” and “efficient in,” with examples using nouns and -ing forms.
Compare “efficient,” “economical,” “productive,” and “effective” in context.
Give me five B2-level examples with “efficient” and Russian translations.
Rewrite the software example using “efficiently” and explain the adjective–adverb difference.
Quiz me with three questions about “efficient,” then ask me to use it in my own sentence.
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