i am afraid…
恐怕…
精品五句
普通句
i'm afraid.
恐怕。
次级高手句
i'm afraid that i cannot go to the concert.
我恐怕不能去看音乐会了。
高手句
i'm afraid that i cannot go to the concert with tonight.
我恐怕今晚不能和你去看音乐会了。
超级高手句
i'm afraid that i cannot go to the concert with tonight,beacuse i've made an appointment 。
我恐怕今晚不能和你去音乐会了，因为我跟别人约好了。
专家句
i'm afraid that i cannot go to the concert with tonight,beacuse i've made an appointment with someone beforhand.
我恐怕今晚不能和你去音乐会了，因为我事先跟别人约好了。
解句
i'm afraid that i cannot go to the concert with you tonight(核心句）
+beacuse i've made an appointment with someone beforehand(beacuse 说明白原因）