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

怎么改?还有：9.I'll go to school at 7:30 a.m.in the
怎么改? 还有：9.  I'll go to school at 7:30 a.m. in the morning.） 10.The film will begin at three quarters past one.）

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.