① alternative表示"兩者擇一的,另一個的"。
They are alternative ways of expressing the same idea. 它們是表達同一意思的不同方法。
② alternate表示"交替的,輪流的(happening by turns);間隔的;候補的,供替代的"。
Last week was a week of alternate rain and sunshine. 上星期時晴時雨。
Tom went to work on alternate days. 湯姆每隔一天上班。
alternative和alternate還可以作名詞。