请帮我回答数英！

1、比一个数的一半少2。如果设这个数为未知数，列方程！
题目不完整。不过“一个数的一半少2”可以表示成(x/2)-2

2、一个零件长8毫米，画在设计图上长4厘米，这幅图的比例尺是多少，为什么？
这是放大的比例尺，比例尺是：40:8=5:1=1:0.2

英语：
1、What color is it?------It's red.
2、Please read Lesson 5 after me.
3、Can you write your English name on the blackboard?
4、Eight men are sitting at the table.
5 Does your father teach in the school?
6 Can you wait for me for half an hour?
7 His uncle has some horses on the farm.
8 Let's go to the restaurant to have a meal.
9 Listen to me carefully, please.
10 September is the ninth month of the year.

1.x/2-2
2.5:1

1.color
2.read
3.write
4.eight
5.teach
6.half
7.farm
8.meal
9.listen
10.ninth

数学:1好像缺少条件,只能写出表达式吧,(1/2)*x-2
2.比例尺是40:8=5:1
英语:1.colo(u)r
2.read
3.write
4.English/Eight
5.teach
6.half
7.farm
8.meal/meeting?应该也可以说去饭店开会吧??
9.List