现在完成时的用法简单说是---完了,结果.肯定句1 She has written the letter.她刚写完信.2 I have eaten the cake.我刚刚吃完蛋糕.3 I have finished my homework.我刚刚做完了我的家庭作业.4 They have left just a minute ago.他们一分钟前刚离开.5 I have got a cold.我感冒了.否定句1 she hasn't come yet.她还没来.2 They haven't finshed the job yet.她们尚未完成该项工作.3 I have not seen the the movie yet.我还没有去看那部电影.4I haven't eaten yet.我还没有吃.5 The rain hasn't stopped yet.雨还没有停.疑问句1 Have you had lunch yet?你吃过午饭了吗?2 Have they got there already?他们到达那儿了吗?3 Has it stopped raining yet?雨停了没有?4 How long have you lived here 你住在这里多久了?5 How long has she died?她去世多久了?就是这些了,