promise to do 承诺做某事

promise v. / n .承 诺 ，许诺；后面可接双宾语或动词不定式作宾语。 promise sb sth：承诺某人某物 promise to do：承诺做.. 如 : She promised me the book.她承诺给我这本书。 I promised to buy a pencil to her yesterday.