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Has she arrived ( ) ? 她已經(jīng)到了嗎?Hasn?t he e ( ) ? 她還沒來嗎? already yet yet yet Homework Review what you learnt today. 。 ” 六、 “ already” 用于現(xiàn)在完成時(shí)的肯定句中 , “yet” 用于現(xiàn)在完成時(shí)的否定句和疑問句中 . 用“ already” “yet”填空。 “ Has the bus left yet”? “Yes. It has already left.” (“No. It hasn?t left yet.) “汽車開走了嗎?” “是的,已經(jīng)開走了。前者一般用在肯定句中,后者用在疑問句中。” Nobody in our class has ever been there. 我們班沒有人去過那。前者意思是“曾經(jīng)”,多見于疑問句或否定句中;后者意思是“從來沒有”,表示全部否定。 The train has just arrived. 火車剛到。 I haven?t seen her for a long time. 我好久沒有見到她了。 二、 for短語(yǔ)表示動(dòng)作延續(xù)多長(zhǎng)時(shí) 間, for的賓語(yǔ)為時(shí)間段。 Mr. Smith has worked here since 1984. 1984年以來,史密斯先生一直在這工作。Unit 1 Past and present Grammar 牛津版初中英語(yǔ)八年級(jí)下 The Present Perfect Tense We use the simple past tense to talk about what happened at a definite time in the past. Past