Period ThreePeriod ThreeGrammar 语法感知本讲栏目开关语法感知知识储备Having collected and evaluatedHaving workedHaving experiencedPeriod Three语法感知Having earlier collectedHaving studiedHaving swallowed本讲栏目开关语法感知知识储备Period Three知识储备现在分词作状语本讲栏目开关语法感知知识储备Period Three知识储备本讲栏目开关语法感知知识储备Period Three知识储备本讲栏目开关语法感知知识储备Period Three知识储备本讲栏目开关语法感知知识储备Period Three知识储备本讲栏目开关语法感知知识储备Period Three知识储备本讲栏目开关语法感知知识储备Period Three知识储备本讲栏目开关语法感知知识储备Period Three知识储备本讲栏目开关语法感知知识储备Having been injuredNot having madereadingwatchingHaving finishedpermitting
