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s the first time I __ here. A. even, came B. even, am ing C. ever, e D. ever, have e D 3)先行詞是 最高級形式或被最高級形容詞 修飾時 ,定語從句常用現(xiàn)在完成時 . ? This is the best film that I’ve seen. 現(xiàn)在完成時 與一般過去時的區(qū)別 : ? 一般過去時 表示發(fā)生在過去的動作,和 現(xiàn)在 無關(guān) ; ? 現(xiàn)在完成時 則強調(diào)某一發(fā)生在過去的動作與現(xiàn)在的關(guān)系,如對現(xiàn)在產(chǎn)生的 結(jié)果或影響 等。 ? ( 1) already和 yet already一般用于肯定句中,yet一般用于否定句和疑問句中。 ? We have already cleaned the classroom . ? The disappearance of Justin has made Kelly very unhappy. ? I have already read the book. ? The boy has e back. 2. 表示一個 剛剛完成 的動作 ? They have just returned from France. ? 3 表示過去發(fā)生 反復(fù)多次 的動作。即動作不發(fā)生的狀態(tài)是可以持續(xù)的。 ? Have you met him this term? ? No,I haven’t. ? since或 for等表示“一段時間”的狀語。 ? 現(xiàn)在完成時的時間狀語: ? for, since, already, yet, so far, up to now, ever, never, recently, lately, just, in the past … years, 等,皆為不確定的時間狀語。 ? He has been taken away by aliens before and he still has nightmares of that now. ? ? (4) 包括“現(xiàn)在”在內(nèi)的時間狀語 。 ? 一些非延續(xù)性動詞如 e, go, leave, die, join, marry 等用于現(xiàn)在完成時,一般不可以與表示一段時間的時間狀語連用,此時應(yīng)改為意義相近的延續(xù)性動詞來表達。 ? She has taught here since ten years ago. ? Since 1949, Chinese people have lived a better life. ? We have been in this school for 3 months. ? We have learned English for 10 years. ? 瞬間動作要用否定式才能延續(xù) ?