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<p style="color:#333333;font-weight:normal;font-size:16px;line-height:30px;font-family:Helvetica,Arial,sans-serif;hyphens:auto;text-align:justify;" data-flag="normal">一、be supposed to do 结构深化</p><p style="color:#333333;font-weight:normal;font-size:16px;line-height:30px;font-family:Helvetica,Arial,sans-serif;hyphens:auto;text-align:justify;" data-flag="normal"><span>时态变化与含义</span></p><p style="color:#333333;font-weight:normal;font-size:16px;line-height:30px;font-family:Helvetica,Arial,sans-serif;hyphens:auto;text-align:justify;" data-flag="normal">一般现在时（are/is supposed to）：强调当下的 “应该” 或 “被期望”，如：<br><span>You are supposed to submit the report by Friday.</span>（你应该在周五前提交报告。）</p><p style="color:#333333;font-weight:normal;font-size:16px;line-height:30px;font-family:Helvetica,Arial,sans-serif;hyphens:auto;text-align:justify;" data-flag="normal">一般过去时（were/was supposed to）：强调过去本应做却未做的事，暗含 “未完成” 的遗憾，如：<br><span>She was supposed to meet us at the station, but she didn’t show up.</span>（她本应在...