根据你要表达的意思,有三个地方改...介词,时态和固定搭配 ()注明
My last weekend was interesting.let me tell you about my last weekend.On Saturday night,I played badminton with some friends in the park.The park is my favorite place.I helped my mother (to) cook lunch in the afternoon.My mother taught me how (to) make lunch.In the evening,I did my homework.On Sunday morning,I went to the zoo.Everything was about animals and I (was) interesting in that.I went boating with my father in the afternoon.It was so much fun.In the evening,I studied for an English test.All in all,I like my last weekend very much.