求幫改英文文法!!! 3

Before I experience across this activity, I conclude with group's goal is everyone can into the distance, but the activity at the start of the first, I group and fail often, a little success shortly but want the header to lead again, and saw the other teams are faster than I, the group began to appear some negative emotions, some group to say that other members do not good, everyone began to not in the mood to activity, and although I didn't say a word, but in the heart has been thinking who is not doing well, do they do better not to bring trouble you. But when one of the team members said some words of encouragement and began to do, everybody's mood also slowly ease some, began to work together, finally, we also very happy we reached the goal, after we finish also help the other groups. In reflection, we are put to recall the situation, also very grateful to encourage our team members. While I am here for my classmates and enhance the cooperation between the spirit and letter
例如,过河去体验这个事件之前,目标群体成员和我每个人都能够完成这一过程,但活动开始之初,我集团经常失败,但很快一个小成功从从头再来,再加上我看到其他团队的速度比当船员们开始出现一些负面情绪,和其他一些船员开始做得很好,我们不希望开始活动,虽然我没有说一个字,但在我的心里已经想到是谁做一份好工作,最好是不要做太伤害你。但是当一个船员说一些鼓励的话语后,开始和完成,每个人的心情慢慢减轻一些,开始一起工作,我们非常高兴,我们终于达到了目标,我们完成后也帮助其他组。在反映,我们在这里给我一个合作的精神,增强信任和学生之间

Prior to exploring this activity, my group members as wellas myself set the goal that all of us will be able to complete the entire activity. We failed frequently at the beginning of theactivity, and we had to start from scratch after just a little success. We gotdisappointed when we saw the other team members moved along much more smoothlythan we did. Although nobody uttered aword of their disappointment, however, deep inside of our hearts, we had amentality that whoever did not perform well will temporize the progress of theentire team. We felt a bit relieved whenone of our team members said some encouraging words and we were on the road ofachieving the goal. We started tocooperate and had achieved the target, so we were full of gaiety and mirth. We also helped out the other groups upon ourcompletion of the activity. Inintrospect, we had our mind focused on the situation we encountered, and feltvery grateful for those group members who had encouraged us. We had elevated the cooperation spirit andtrust between classmates through this activity.Onthe contrary, we would only follow the steps along with the guidance teacher toexperience this activity if not for the adventure wave. We had gone through the retrospective processand came to a beneficial conclusion, and we can apply what we learnt from theactivity to our daily lives. If we didnot go through brainstorming, the participants would not have an idea of whatthey have learnt during the activity.

2013-12-21 04:35:40 補充：
The first sentence should be:
Prior to exploring into this activity,....