现在完成时标志词用法.pptx

现在完成时标志词用法 这是大家提出的问题： 第1页/共8页 现在完成时标志词： since,for,before,yet,already,so far, ever,never,just 第2页/共8页 讲解 1、already意思是“已经” ①通常用于陈述句中（放在have和has的后面） ②也可用于疑问句，表示期望得到肯定的回答或表示惊异，此时already常放在句末。 Has she found her bike already？她已经找到自行车了？ 2、yet用法 ①yet可用于否定句，此时译为“还”； I haven’t found my ruler yet. ②也可以用于疑问句，译为“已经”（放在have和has的后面也可放在句末） Have you found your ruler yet？你已经找到尺子了吗？ 3、just只用于陈述句意思是“刚才”（放在have和has的后面） I have just received a letter. 第3页/共8页 4、never用于否定句译为“从不”（放在have和has的后面） I’ve never been to Beijing. 5、ever用于疑问句译为“曾经”（放在have和has的后面） Have you ever been to Beijing? 6.before用于肯定句译为“以前”（放在have和has的后面一般放在句末）。如He has never been to Beijing before .She has washed clothes before . 第4页/共8页 练习 选填already,yet,just,never,ever,before,since,so far,for 1. Has she waited for an hour ___? 2. I have _____ been to England.(否定) 3. Li Ming has known him _____ then. 4. Wang Ming has read the book _____. 5. His father has been in the Party ___ years. 6. It has rained ___ such a long time! 7.I have _______ done my homework. 8.He has ____ had a headache. yet never since before for for already just 第5页/共8页 翻译句子： 1.她以前从没吃过芒果。你吃过么。 2.我刚刚参加完法语考试。 3.他今年已经去了三次美国了。 4.到目前。没有他的消息。 Shes never had mango before,have you? Ive just taken the French exam. Hes been to America for 3 times this year. We havent got imformation about him so far. 第6页/共8页 第7页/共8页