1、Period Three Period ThreeGrammar 语法感知本讲栏目开关语法感知知识储备had not beenwould have beenwould notbePeriod Three might not语法感知本讲栏目开关语法感知知识储备werePeriod Three 语法感知had stayedwere visitinghad workedwere本讲栏目开关语法感知知识储备Period Three 语法感知本讲栏目开关语法感知知识储备Weredidnt comewouldnt have wonwerePeriod Three 知识储备本讲栏目开关语法感知知识储备Per
2、iod 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If they had/Had they spent as much time studying ashad no choice but to doyou left tomorrowwithoutwhich he would have been lostI had been with you yesterday
