a seven-years child 有类似的用法吗

I___（am,was）a child seven years ago. a seven-years child 有类似的用法吗 I___（am,was）a child seven years ago.急I___（am,was）a child seven years ago.急 a seven-years child与a seven-year child哪个对?大耳朵英语网说前面的对?为什么? the child of three years old doesn't know there___(be)seven days in a week Do you think doing lots of homework is good for a _____ child? sA . seven years old B seven-years-old C seven-year-old D seven-year-old's a five-year plan. 一个五年计划的YEAR不用加S,而 a seven-years child里的YEAR要加要呢? ( ) His danghter is ________.A seven years B seven year old C seven years old I was a child two years ago.划 a child my friend saved a _____ boy in the river yesterdayA.seven-years-oldB.seven-years-oldsC.seven-year-oldD.seven years old a five-year plan.一个五年计划这句干嘛那个year不用加s呢?请那位朋友帮下忙,本人是英语菜鸟.但是a seven-years child里又有s, The girl goes to school____ A.at age of seven B.seven years C.when she seven D,seven years old该选哪个呢?为什么 I was a child two years ago.划two years ago 七年之痒 SEVEN YEARS ITCH怎么样 什么是a middle-class family?原句是lau was the fourth child in a middle-class family of seven childen 一些英语单词拼写、、、要写出语句的解释1、Even a child of three knows that thirteen and twenty-seven is f——2、He does everything by h___,though he is only nine years old3、there are four q___in a hour4、Sam introduced h__suc 一些英语单词拼写、、、要写出语句的解释1、Even a child of three knows that thirteen and twenty-seven is f——2、He does everything by h___,though he is only nine years old3、there are four q___in a hour4、Sam introduced h__suc 一道英语题目关于连字符的They have an _________son.A.seven-year-oldB.seven years oldC.eight-year-oldD.eight years old