2017-2018学年度人教版必修2Unit4Wildlife protectionPeriod2Language points课件(40张)
2017-2018学年度人教版必修2Unit4Wildlife protectionPeriod2Language points课件(40张)第3页

2.threaten vt. 1).恐吓,威胁 threaten +n.+with+n.以...恐吓... eg.The robber threatened me with a gun. threaten to do 恐吓说要... eg.He threatened to make the photo public. 2)有...征兆/忧虑 These dark clouds threaten rain. 3)vi.迫近 A typhoon was threatening. threat n. threatening adj. 恐吓的,威胁的