He was so hard on me last night.
他昨晚对我很凶.

===================================================

Hard 这个字在美国用的很多, hard 的意思就是说态度很差, 对某人很凶, 对某人很刻薄, 或是对人很严格都可以用这个字. 所以 He was so hard on me last night 简单地说就是他昨晚对我不好, 可能是对你发脾气, 或是对你态度很差. Hard 也可以指让你觉得很难去调适的状况. 例如考试没考好你可以说 I didn't do it well in the test. It's so hard for me. 要安慰别人的话, 可以说 No hard feelings. 就是说不要有这样的感觉, 不要把 hard feeling 放在心上. 例如我同学考试没考好, 我就可以安慰他. No hard feelings, I believe you are gonna ace it next time.

He was so hard on me last night.
他昨晚对我很凶.

He was so hard on me last night.
他昨晚对我很凶.
I didn't do it well in the test. It's so hard for me.
No hard feelings, I believe you are gonna ace it next time

he was so hard on me yestoday

He is so hard on me last night

He was so hard on me last night.

key  structures  
语序
The pliceman arrested the thief.
The thief arrested the  pliceman

He was so hard on me last night.
他昨晚对我很凶.

He was so hard on me last night