aid
1.aid的宾语后面接不定式或in和动名词都可以,如We aid him to do it和We aid him in doing it。
2.aid(帮助物)后面接to,如I hope this book will be a great aid to English composition。要是后面用动名词,接to或for都可以,如various aids to (或for) teaching foreign languages。
3.下面两句意思不同:
He came for our aid. (他来请我们帮助。)
He came to our aid. (他来帮助我们。)
4.What's this in aid of? 和What's all this in aid of? 都是口语,直译作“这(一切)帮助什么?”,就是“你(这样做)的目的是什么?”