Correct

老 vs 总

/ lǎo vs zǒng /
Strokes

Definition

老 and 总 both are Adverbs, which means [always].

Example

老 and 总 both indicate "an unchanged situation or continuous repetition".
1
zěnme
怎么
lǎo
  
(
zǒng
  
)
zhù
不住
zhège
这个
de
yīn
读音
  
?

Why do I always forget the word's pronunciation?

2
biè
lǎo
  
(
zǒng
  
)
wánr  
玩儿
le
  
,
gāi
kànkan
看看
shū
le
  

Don't play all the time. It's high time you read.

3
gǎnmào
感冒
le
  
,
lǎo
  
(
zǒng
  
)
sou
咳嗽
  

I've got a cold and I kept on coughing.

4
Zhèxiē
这些
sōngshù
松树
nián
年四
lǎo
  
(
zǒng
  
)
me
那么
绿
  

The pine trees are evergreen.

老 and 总 both mean "always, all along".
5
Biè
lǎo
  
(
zǒng
  
)
ràng
jiārén
家里人
cāoxīn
操心
  

Don't make your family worry about you all day long.

6
Shàngxué
上学
shí
liǎ
他俩
lǎo
  
(
zǒng
  
)
zài
一起
  

They used to stay together at school.

7
Zhè
diǎnr  
点儿
xiǎoshì
小事
  
,
biè
lǎo
  
(
zǒng
  
)
zài
xīnshàng
心上
  

Don't keep such a trivial on your mind all the time.

8
de
fángjiān
房间
lǎo
  
(
zǒng
  
)
me
那么
gānjìng
干净
  
zhěng
整齐
  

The old (always) in his room was so clean and tidy.

老 is used to qualify a few monosyllabic adjectives to show the high degree, which cannot be replaced by 总.
9
měitiān
每天
lǎozǎo
老早
jiù
lai
起来
  
,
chū
出去
pǎo
跑步
  

He gets up very early to jiog every morning.

10
Lǎo
cháng
de
gēn
shéngzi
绳子
ràng
gěi
jiǎnduàn
剪断
le
  

He cut a very long rope.

11
érzi
儿子
jīng
已经
cháng
de
lǎogāo
老高
lǎo
gāo
le
  

His son is very tall now.

总 is used in estimation to show a low assumption; which can not be replaced by 老.
12
bǎi
一百
yuán
gòu
不够
  
,
bǎishí
一百五十
yuán
zǒng
gòu
le
  
!

If 100 Yuan is not enough,I think 150 Yuan must be enough.

13
Jīntiān
今天
shì
xīng
星期日
  
,
zǒng
gāi
yǒu
shíjiān
时间
le
  
!

Today is Sunday.He must be free.

14
Zhèyàng
这样
chǔ
处理
  
,
zǒng
huì
mǎn
满意
le
  

He must be satisfied with the solution.

总 is used to point out the most critical point, meaning “after all”; which can not be replaced by 老.
15
zǒng
xué
guò
liǎng
nián
  
,
zài
xué
医学
zhīshi
知识
shàng
jiàng
duō
le
  

He is superior to me in medicine, for he learned it for two years after all.

16
Háizi
孩子
zǒngshì
总是
háizi
孩子
  
,
néng
xiàng
ren
大人
yàng
那样
dǒngshì
懂事
  
?

A child is a child after all. How can you expect him to be as sensible as a grown-up?

17
rén
de
liang
力量
zǒngshì
总是
yǒuxiàn
有限
de
  

The strength of an individual is limited after all.

18
men
我们
zǒngshì
总是
èrshí
二十
nián
de
péngyou
朋友
le
  
,
彼此
hěn
liǎojiě
了解
  

We are friends for twenty years after all and therefore we know each other well.

总 is used to show assurance in estimation; which can not be replaced by 老.
19
Zhège
这个
wèn
问题
zǒnghuì
总会
jiějué
解决
de
  

The problem is likely to be solved.

20
yàoshi
要是
zhème
这么
zhù
注意
  
,
shēn
身体
zǒng
yǒu
tiān
huì
kuǎ
de
  

If you don't care about your health, you will collapse some day.

21
yàoshi
要是
zhème
这么
zhù
注意
  
,
shēn
身体
zǒng
yǒu
tiān
huì
kuǎ
de
  

If you don't care about your health, you will collapse some day.