怎么改？ 还有：9. I✀ll go to school at 7:30 a.m. in the

1: 1107 should be read as one thousand one hundred and seven.
在读数字时，如：and前只有百或千时，用one hundred/ one thousand 还是a hundred /a thousand全是可以的。但如果文有百又有千时，则只能用one不要用a。 如果没有and时，如：1100也只能读作one thousand one hundred 或eleven hundred.

2:
I drove about half a mile.
半小时为half an hour, 半天为half a day, 半镑为half a pound, 尽量避免用half a year, half a month, 要用six months, two weeks 或 fifteen days 要注意的是Half of the work is done Half of the books are sold. 当Half 作名词时，其谓语动词要看of后面的名词而定。如名词是不可数名词则用单数谓语动词，如是复数名词时，则要用复数谓语动词。要注意的是一个半的表达法，如：One and a half apples is left on the table.其名词要用复数，但谓语动词则要用单数。

3: Sixty students are playing on the ground.
在句首的数字要用文字而不要用阿拉伯数字，如数字过大则应放于句中，用阿拉伯数字。如： There are 166 students playing on the ground.

4: He became famous in his fifties.
在他50多岁时，不能说 around his fifties，要用in his fifties 50多岁时，而in the fiflies 在50年代。

5:There are about two thousand workers in our factory.
几千，几百的表达法是基数词加thousand或加hundred,而且均不要加s。这样的单位还有dozen(打)， score (20年)等。

6.In the morning there are hundreds of old people walking in the park.
当表达数百，数千时，要用hundreds of和thousands of 这一结构。

7、 The class begins at 8 a. m.
与符号或与缩写的字母连用时一定要用数字，如：43%，No.2…

8、 Two fifths of the books are sold out.
分数表示法，分子用基数词，分母用序数词，但分子大于1时，分母要在序数词后加s。

9：
I'll go to school at 7∶30 a. m/或者at 7∶30 in the morning.
a. m 即表达在早上之意，不要再用in the morning.

10:The film will begin at one quarter to two.
大于30分钟时不要使用past，而要用差多少不到几点的to来表达。

祝进步，不懂追问。

第一题既然说了a.m，就不用 in the morning 了
第二题，一般都会说 one quarter to two 而不是 three quarters past one

on the morning