It's necessary that you train yourself before the walk:你有必要之前训练你自己走 It's important that you have your own support team:它的重要的是你有你自己的支持小组It's difficult to walk through eight country parks:很难穿过八个乡村公园It's meaningful to join the Tree-planting Club:这是有意义的参加植树俱乐部It's important for people to learn team spirit:重要的是人们学习团队精神It's ...
第一二句的句型结构It's+adj.+that clause(从句）1.在走路之前你有必要训练（锻炼）你自己2.你有你自己支持的队伍是很重要的第三四句的句型结构It's+adj.+to do sth3.走过八个城市公园是很困难的4.加入植树俱乐部是有意义的第五六句的句型结构It's+adj.+for sb to do sth5.对...
