1、表达的意思不一样
engage in意为"参与，从事"，用于肯定语气中，多表达的是"主动地参与"。
be engaged in意为 "忙于..."与"be busy doing sth"类似，被迫忙碌的意味。
2、读法不一样
engage in读：英[ɪnˈɡeɪdʒ in]、美[ɪn'gedʒ ɪn]。
be engaged in读：英[bi: enˈgeɪdʒd in]、美[bi ɛnˈɡedʒd ɪn]。
3、engage in表示主动语态，be engaged in表示被动语态。
例句：
①、engage in
His troops will only engage in a ground battle when all the odds are in their favour.
他的部队只有在胜券在握的时候才打地面战。
We never engage in irregularities.
我们决不搞歪的邪的。
They engage in the study of music.
他们从事音乐研究。
②、be engaged in
Press the lever until you hear the catch engage.
压下挡杆，直到听到挡挂好。
It could engage the enemy beyond the range of hostile torpedoes.
从这可以避开敌方鱼雷区对敌人发动进攻。
扩展资料
engage的组词用法
1、engage with 融入
It's difficult to engage with the locals.
很难融入当地人。
2、be engaged 忙于
I am now engaged on my second book.
我现在忙于写第二本书。
3、be engaged to someone 和某人订婚
My sister has engaged to Peter who is a foreigner.
我姐姐和一个外国人订婚了。