1. must 侧重于个人意志和主观上的必要。have to 侧重于客观上的必要,可用于现在时、过去时和将来时。例如:
I know I must study hard. 我知道我必须努力学习。
My brother was very ill, so I had to call the doctor in the mid-night.
我弟弟病得厉害, 我只得半夜里把医生请来。
I haven't got any money with me, so I'll have to borrow some from my friend.
我身上没带钱,只好向朋友借点了。
He said they must work hard.他说他们必须努力工作。
2. have to可以用于多种时态;而must只用于一般现在或将来。例如:
The composition is due to hand in this morning, so I had to finish it last night.
作文今天早晨到期,因此我不得不昨天晚上完成。
相关英文作文: 小学一年级英语作文 :Children's Day、儿童节晚餐 Dinner on Children's Day、I Must Finish My Homework 我一定要完成作业、我一定要完成作业 I Must Finish My Homework、我的钢琴老师 My Piano Teacher、可爱的熊猫 Lovely Panda、小学二年级英语作文:A diary of My Birthday、年轻有才的人 The Young Talents、英语作文:运动会 Sports Meeting、英语二年级作文:来自姚明的影响