1) He has cut back on alcohol.

他已戒酒了。
2) He has already given up drinking.

他早已戒酒了。
3) He is through with alcohol.

他戒了酒。
4) He has quit smoking.

他已戒了烟。
5) He cannot keep from drink

他戒不了酒。
6) He has sworn off drinking.

他已保证戒酒。
参考词条