开头:写作目的

1. It is a great honor for me to invite you as a distinguished guest(作为一位贵客).

2. I am writing on behalf of(代表/介词短语) all the students of our department to invite you to give a lecture on Western painting.

3.Representing my whole family(代表我全家人非谓语动词作状语)，I’m writing to invite you to join us for dinner at 6:30 pm, Feb. 13th at my house for the Spring Festival 一 the most important festival for Chinese people.

4. There is going to be a picnic for students at the City Park this Saturday. As a member of the Students' Union and a good friend of yours,I' m honored to invite you to come with us.

5. How is everything going? I wonder if you' re interested in joining us in a hiking activity.(你是否有兴趣加入我们的远足活动/非谓语动)

活动安排

6. Besides, a wide range of activities will be held, including the competitions between different classes, which will be the highlight of this show.(这将会是这场演出的亮点/定语从句).

7, There will be two rounds as we plan. The first round requires participants to make a two-minute speech(做一个两分钟的演讲)on specific topics. In the second round, participants are requested to give a talent show in English.

8.The Spring Festival is the most important festival, during which we will put up various decorations to create a holiday atmosphere,especially red paper cuts with the character “fu”,meaning blessing.

9.As for the activities,eating and talking never fail to bring laughter.

10、And I suppose the splendid Spring Festival Gala will also be your cup of tea.

11. Then, we will Climb the mountain and have a picnic on the summit,from where we can enjoy the beautiful scenery of the whole city（从那里我们可以欣赏到整个城市的美丽风景/定语从句).

12. We are going to climb the mountain, admiring the spectacular view of nature.(欣赏大自然的壮丽景色/非谓语动词作状语).

13. On top of the mountain,we will have a picnic,during which we are going to sing songs and taste various mouth-watering Chinese snacks(令人垂涎欲滴的中国小吃）.

14. You may equip yourself with a camera to record the beautiful scenery and an umbrella or a raincoat is also necessary in case you are caught in the rain.

活动意义

15.Taking advantage of this golden opportunity,we can not only  enhance our understanding of Chinese indigenous culture.(不仅增进我们对中国本土文化的了解/not only),but also enrich our cultural life.

16. In my opinion,it must be a great chance for you to know more about our city and make new friends.

结尾:再次邀请+期待回复

17. Your participation can surely add color to our trip and we are all looking forward to your involvement. 

18. Your presence is highly expected.

19.I would appreciate it if you could accept my invitation(如果你接受我的邀请，我会很感激的)I’m sure it can leave a wonderful impression on you!