1. Some scientists were determined to help humans realise their dream to explore space.
2. On 12 April, 1961, Yuri Gagarin became the first person in the world to go into space.
3. First of all, you must be intelligent enough to get a related college degree.
分析上面的句子: 句1和句 2中黑体部分是动词不定式作定语; 句3中黑体部分是动词不定式作状语。
