摘要：1．变化人称的一般规律: (1)直接引语中的第一人称变间接引语时.其人称与主句的主语一致. (2)直接引语中的第二人称变间接引语时.其人称与主句的宾语一致. (3)直接引语中的第三人称变间接引语时.其人称不变. For example: An English teacher asked his students.“Are you interested in my lessons? An English teacher asked his students if were interested in lessons. 解析:根据语境.直接引语的第二人称you变间接引语时.其人称与主句的宾语一致.即变为they,直接引语中的第一人称my变为间接引语时其人称与主句的主语一致.即改为his.故正确答案为:they,his.
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小博士：仔细观察下面的基数词和对应的序数词的区别和变化，你会发现这种变化是有规律的，你能归纳出来吗？请根据规律填出所缺的基数词和序数词，并特别注意黑体字的词。
one | first | eleven | eleventh | twenty-one | twenty-first |
two | second | twelve | twelfth | twenty-two | twenty-second |
three | third | thirteen | thirteenth | twenty-three | twenty-third |
four | fourth | fourteen | fourteenth | twenty-four | ______ |
five | fifth | fifteen | ______ | twenty-five | twenty-fifth |
six | sixth | sixteen | sixteenth | twenty-six | twenty-sixth |
seven | ______ | seventeen | seventeenth | twenty-seven | twenty-seventh |
eight | eighth | eighteen | eighteenth | twenty-eight | twenty-eighth |
nine | ninth | nineteen | nineteenth | twenty-nine | twenty-ninth |
ten | tenth | twenty | twentieth | thirty | thirtieth |
thirty-one | thirty-first fortieth ninetieth | hundred | hundredth | ||
forty | thousand | thousandth | |||
ninety | million | millionth | |||
我找到规律了！请看：
1 英语序数词1～19，除first，second，third等特殊形式外，其余的一般是在相应的基数词后加-th构成。
2 有几个序数词加-th时拼法不规则，要注意。如fifth，________ ________ ________。
3 十位整数的序数词的构成方法是先将其基数词的词尾“ty”中的“y”改为“i”，再加“-eth”。如________。
4 基数词“几十几”变成序数词时，只需将个位数变成序数词，十位数不变。如________。
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李梅是个好学生，她上学从不迟到。但今天上午第一节课她竟然迟到了将近30分钟。她去哪里了？原来，她是为做—件好事而迟到的。她做了什么好事呢？请你展开想象，以第一人称用一般过去时态把下面李梅的日记补充完整。（约60词左右，已给出的开头部分不计入总词数。）
June 15th, Thursday Sunny
Today is Thursday. It’s a fine day. I walked to school as usual. On my way to school
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June 15th, Thursday Sunny
Today is Thursday. It’s a fine day. I walked to school as usual. On my way to school
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