求英语大神帮我解析一下这篇英语阅读

Question

I like taking photos very much. Once I travelled by ship ___1___ a cloudy morning. It was in the afternoon ___2___ the weather turned fine. Therefore I wanted to take some photos. I was looking around and I saw next to me a lovely little girl ___3___ sit on her father s shoulders. ___4___ was luchy for me to meet such a perfect moment—the girl was smiling and the surrounding view was beautiful.
Without thinking I took a picture ___5___ the little girl at that moment. Her mother was surprised that a ___6___ strange was photographing her daughter. I explained that I was moved by that sight and showed them ___7___ photo on my digital数字的 camera. They loved it very much. I said I could email it to them when I got home.
Finally they gave ___8___ their email address. The next day I sent them their daughter s photo as I ___9___ promise. This morning I received a message back saying they are grateful and ___10___ they are very happy with the lovely photo of their daughter and a lovely memory of the day.

答案
1. on 2. that 3. sitting 4. It 5. of 6. stranger 7. the 8. me 9. had promised 10. that

求大神帮我解析一下答案解析，为什么要这么填？

Answer 1

1.因为有cloudy修饰morning，这是一个多云的早晨，是一个特殊的早晨，所以需要用on，另外的例子还有on Saturday morning，都是一些特殊的早晨，所以用on。
2.in the afternoon后面的that是引导一个从句the weather turned fine，that后面的从句修饰前面的afternoon，也就是天气变晴朗的那个下午。
3.这里填sitting是省略了who is的用法，也就是lovely little who is sitting on...，所以要用现在进行时
4. It was lucky for me to do这是一个固定用法
5. the picture of sth也是固定用法，...的照片
6. stranger陌生人
7. the photo要表示特指，那张在我相机里面的照片
8. gave me给我的意思
9. had promised已经保证了，这里是在过去保证的，所以过去完成时
10. that也是引导从句，This morning I received a message back saying that they are very happy with the lovely photo of their daughter and a lovely memory of the day，因为and是并列结构，所以你可以这样看。希望帮到你~

Answer 2

1.首先，要记住 on+日期 in+月份 at+时间点 sunday是日期，所以用on
2.that引导定语从句。
3.I was looking around and I saw next to me a lovely little girl sitting on her father`s shoulders，译为： 那时候我正在看到一个女孩正坐在她爸爸的肩膀上，表示动作正在进行，所以用sitting。
4.It was luchy for me to meet such a perfect moment. it 是形式主语，真正主语是后面的meet such a perfect moment，用it充当形式主语，避免了句子头重脚轻。
5.a picture of 是固定搭配，译为：xx的照片。
6.根据上下文理解，挖出来的空里应填stranger陌生人。
7.the photo，指的是刚才找的那张照片，所以用the，不用a。
8.根据全文上下理解，照好了照片，他们应该给我他们的邮箱，我好把照片发到他们的邮箱。所以空里应填me。
9.整篇文章都用的是过去时态，而发照片这个动作发生在许诺传照片之后，所以许诺的时态应为had done，即 had promise
10.that连接的是并列结构，that前和that后都是感谢的内容。

希望能帮到你，望采纳！

Answer 3

1.一般情况下用的是in the morning/afternoon/evening，但是如果前面有像cloudy这样的修饰词，就要用on，例如on a cold morning
2.It is/was ... that...是强调句型，固定的说法
3. see sb. doing sth.看见某人正在做某事
4.It is/was +adj(形容词）+for sb. to do sth. 固定句型
5.take a picture of sb.给某人照相，而且就是给他本人照相;take a photo for sb 是为某人照相，相片上不一定有他本人.所以根据上下文，用of更恰当
6.stranger 陌生人，原文句子是：他母亲很惊讶有个陌生人在给女儿照相...
7.定冠词the在这儿表示特指，就是刚才照的那一张照片
8.根据上下文是给我邮箱地址，而give是动词，后面跟宾语，所以填me
9.这篇文章是在讲述过去的一件事情，全文基本上都是一般过去式，在这个句子里，主句谓语动词sent，从句promise的动作发生在sent之前，所以用过去完成时had promised
10.这个主句后面跟了两个that从句，“This morning I received a message back saying （that）they are grateful and ___ they are very happy with the lovely photo of their daughter and a lovely memory of the day. ”也就是省略了saying后面的that，而如果主句后面有两个that从句的话，第一个可以省略，第二个不可以