one-second 还有two-third又是什么意思?有a half of the children 这种说法吗

one-second 还有two-third又是什么意思?有a half of the children 这种说法吗 in the second half在一年当中是什么意思?有这种说法吗. 有one and half a month这种说法吗? a third one和the second half of the students 还是one-second of the students The woman with two children ( )for nearly one and a half hou Which is the biggest number of the four?A.One- third B Two t I like neither of the two books.Please showme (a third) one. Nowadays___[two third/two thirds/two three/second three] of Over half of the children ___in one-parent families.A.live B One half of a number is 17 more than one third of that numbe a half of year有这样的说法吗?