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文法トピック
Present Perfect Continuousの練習問題
Learn how to emphasize the duration or ongoing nature of a recent activity. Understand the meaning, follow the form, study clear examples and avoid common mistakes.
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の関連項目
Past Perfect Continuous
Learn how to emphasize how long an activity continued before a past point. Understand the meaning, follow the form, study clear examples and avoid common mistakes.
Future Perfect
Learn how to describe something that will be completed before a future deadline. Understand the meaning, follow the form, study clear examples and avoid common mistakes.