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句子要說明的是現(xiàn)在正在發(fā)生的事,動詞應用現(xiàn)在進行時。 Linda39。s brother is watching TV in his bedroom now. We39。re far from home. What are our parents doing at the moment? these days, this week, this month 等時,如果句子所要表達的意義是在這一階段正在發(fā)生的事,則動詞應用現(xiàn)在進行時。 These days we are helping the farmers work on the farm.