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同学好：
On a spring morning, there were no clouds in the sky[/b]. The sun was warm but it's not too hot.
“在具体的某/…的上午/下午/晚上”，介词用on；cloud 是可数名词，这里结合语境用复数，be 用were。两个分别独立的主谓结构需要单独成句；“但是”用but 表示。
So when Mr. Andrew saw an old gentleman carrying a big black umbrella in his hand, he was very surprised.
so 表示“所以”，它的位置根据句意而定，结合上文，so 应该在这里的句首；Mr. 前面不用the；old 是元音音标开头，前面用an；“拿着”写成具体的动词carrying 更好些；“惊讶的”是surprised。
Mr. Andrew said to the old gentleman, ’Do you think it will rain today, don’t you?’
英语里面不用冒号；反意疑问句的陈述部分为非第一人称主语+think+that 从句，问句部分的动词和主语与陈述部分的主句动词和主语保持一致。
‘No,’ the old gentleman said, ‘ I don’t think so.’
注意大小写；标点补全。
‘Then you take this umbrella for blocking the sun , don’t you? ‘
block the sun “遮挡太阳”；主语是you，后面用don't you。
‘No, the sun in the spring is not hot.’
Mr. Andrew stared at that umbrella again, so the old gentleman said,’ I am old, and my legs and feet are not flexible, so I need a walking stick indeed. But when I hold a walking stick, people will say “Look at that poor old man.” I don’t like that. When I carry an umbrella on a sunny day, people will only say “Look at that stupid man!”’
a(an) old 这个表达不对；留意添加连词；结合语境，might 替换成will；“瞧xxx”用look at xxx；其中the 替换成that 更准确。

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