帮忙翻译几句句子..还有数学的问题

1.he would be back after two days
2.where has he gone recently?he has not been here
3.I have already graduated from primary school for two years
4.at the end of the meeting,they sang the national song together
5.he could not help to cry because he didn't pass the exam
6.when these actors passed the street,we cheered and clapped

1.he would be back after two days
2.where has he gone recently?he has not been here
3.I have already graduated from primary school for two years
4.at the end of the meeting,they sang the national song together
5.he could not help to cry because he didn't pass the exam
6.when these actors passed the street,we cheered and clapped

有解析式可求B(3,0),C(2,2)

因为三角形PBC的面积是三角形OBC的一半，而且两三角形同低，所以三角形PBC的高是三角形OBC的一半
又因为三角形OBC的高是2，所以PBC的高是1
所以过P作横轴的垂线，长度是1

所以，纵坐标是1，横坐标是1
即p（1,1)

因为三角形PBC的面积是三角形OBC的一半，而且两三角形同低，所以三角形PBC的高是三角形OBC的一半
又因为三角形OBC的高是2，所以PBC的高是1
所以过P作横轴的垂线，长度是1

所以，纵坐标是1，横坐标是1
即p（1,1)

1.he would be back after two days
2.where has he gone recently?he has not been here
3.I have already graduated from primary school for two years
4.at the end of the meeting,they sang the national song together
5.he could not help to cry because he didn't pass the exam
6.when these actors passed the street,we cheered and clapped

有解析式可求B(3,0),C(2,2)

因为三角形PBC的面积是三角形OBC的一半，而且两三角形同低，所以三角形PBC的高是三角形OBC的一半
又因为三角形OBC的高是2，所以PBC的高是1
所以过P作横轴的垂线，长度是1

所以，纵坐标是1，横坐标是1
即p（1,1)

1.he would be back after two days
2.where has he gone recently?he has not been here
3.I have already graduated from primary school for two years
4.at the end of the meeting,they sang the national song together
5.he could not help to cry because he didn't pass the exam
6.when these actors passed the street,we cheered and clapped

因为三角形PBC的面积是三角形OBC的一半，而且两三角形同低，所以三角形PBC的高是三角形OBC的一半
又因为三角形OBC的高是2，所以PBC的高是1
所以过P作横轴的垂线，长度是1

所以，纵坐标是1，横坐标是1
即p（1,1)