1. 依靠某人做某事：
depend on/upon sb to do sth
= rely on/upon sb to do sth
= depend on/upon sb/one's doing sth
= rely on/upon sb/one's doing sth
2. “取决于某人做某事”没有固定短语，只能用：
depend on/upon it that(sb do sth从句）
即在depend on/upon加上it做其形式宾语，而把表示“某人做某事”的that从句置后做其真正的宾语(从句)。
