20.No official(官方的) permissionhas been given for the event to take place.

分析 這項(xiàng)活動沒有官方允許,不能進(jìn)行.

解答 permission    permission是一個名詞,意為"允許,批準(zhǔn)",official是形容詞,后加名詞.本句主語是permission,has been given是被動語態(tài),表示"允許是被給的".
take place 意為"發(fā)生,舉行".

點(diǎn)評 考查名詞的詞義.在熟知單詞詞義的基礎(chǔ)上要注意詞性的修飾.

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