Ⅲ.句型搜索 1．The tubes were attached to a long stick which helped keep the rocket moving in a straight direction.

[信息提取]　句子中包含有keep sb doing sth结构，意为“使某人一直做某事”。 [例句仿写]　我认为让这么小的孩子在这么冷的天气里跑步不是好主意。 I don't think it is a good idea to __________________in such cold weather. 答案　keep so little a child running