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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"><b>I throw away the garbage. 我丢垃圾。</b></p><p style="font-size:16px;line-height:30px;font-family:Helvetica, Arial, sans-serif;color:#333333;font-weight:normal;text-align:justify;" data-flag="normal"><br />(1) 改成以 He 为主语的过去时<br />—> He threw away the garbage. 他丢垃圾。（throw 的过去式是 threw）<br /><br />(2) 加上 yesterday 并改为否定句<br />—> I didn't throw away the garbage yesterday. 昨天我没有丢垃圾。<br /><br />(3) 以 he 为主语，并在句子前面加上 I saw<br />—> I saw him throw away the garbage. 我看见他丢垃圾<br /></p><span><br /></span><p style="font-size:16px;line-height:30px;font-family:Helvetica, Arial, sans-serif;color:#333333;font-weight:normal;text-align:justify;" data-flag="normal"><b>I change the baby's diaper. 换婴儿尿布。</b></p><p style="font-size:16px;line-height:30px;font-family:Helvetica, Arial, sans-serif;color:#333333;text-align:justify;" data-flag...