课程内容
五年级英语上册Module 1 Unit 1 《My birthday.(1)》
1.January-Jan.
2.February-Feb.
3.March-Mar.
4.April-Apr.
5.May-May.
6.June-Jun.
7.July-Jul.
8.August-Aug.
9.September-Sep.或者Sept.
10.October-Oct.
11.November-Nov.
12.December-Dec.
Ask and answer
S1:When's your birthday?
S2:It's on the....of January......
first  
second
third
fourth
fifth
sixth
seventh
eighth
ninth
tenth
基数词变序数词口诀
英语中基数词变为序数词时，一般在基数词后加词尾-th,但有几个词变化特殊，只要记住下面这个口诀，这些问题即可迎刃而解。
一、二、三，单独记；八去t，九除e，ve要用f替，整十基数变序数，先把ty变成tie；要是遇到两位数，十位基数个位序，th最后加上去。
辨析口诀：one-first;two-second,three-third这三个词变化特殊，要单独记：eight-eighth,nine-ninth,八去t，九去e后再加-th;five-fifth,twelve-twelfth,五，十二把ve换成f再加-th;twenty-twentieth,thirty-thirtieth...整十先把词尾y改为ie再加-th。两位数时则十位数用基数词，个位数用序数词，如twenty-first.
Ask and answer
When's your birthday?
It's on the 18th of May.When's your birthday?
It's on the 3rd of April.