Correct

讲 vs 说

/ jiǎng vs shuō /
Strokes

Definition

讲 and 说 are both Verbs, which means “speak, say, tell”.

Example

讲 and 说 mean "to express with words".
说 is more casual and 讲 is more formal, e.g. 讲故事 (tell a tale), 说闲话 (gossip, make sarcastic or critical comments), etc.

In examles ① ② ③ ④, 讲 and 说 are interchangeable, but northern Chinese use 说 more often, while the southerners use 讲 more often.
1
duì
shuō
  
(
jiǎng
  
)
  
:
biè
wàng
le
míngtiān
明天
de
shì
  

She told me not to forget what to do tomorrow.

2
huì
不会
chàng
唱歌
  
,
jiù
shuō
  
(
jiǎng
  
)
xiàohuà
笑话
  

Since I can't sing, I‘d like to tell a joke.

讲 and 说 mean "to explain".
3
shēng
发生
le
huì
误会
  
,
shuāngfāng
双方
shuō
  
(
jiǎng
  
)
qīngchu
清楚
jiù
háng
le
  

It will be OK if you two parties make clear about the misunderstanding.

4
xiáng
详细
gěi
shuō
le
shuō
  
(
jiǎng
le
jiǎng
  
)
zhèzhǒng
这种
diàn
电器
de
gōngzuò
工作
yuán
原理
shǐyòng
使用
fāng
方法
  

He introduced the structure of the electric appliance and how to use it in detail.

讲 means "to expound" and is often used in teaching.
5
Jīntiān
今天
wáng
lǎoshī
老师
yào
jiǎng
hàn
汉语
de
字句
  

Today, Teacher Wang will give us a lesson on sentences with 把.

6
Míngtiān
明天
lǎoshī
老师
yào
jiǎng
第五
  

Tomorrow, the teacher will teach lesson five.

讲 also means "to negotiate so as to get an advantageous result".
7
guǒ
如果
yǒuxīn
有心
mǎi
zhè
jiān
fáng
  
,
可以
fáng
zhǔjiǎng
主讲
jiàqián
价钱
  

You can bargain with the house owner if you want to buy it.

8
Shànyǎng
赡养
lǎorén
老人
zěn
néng
jiǎng
tiáojiàn
条件
  
?

How can you raise terms about supporting the seniors.

讲 also means “as far as something is concerned”.
9
Jiǎng
体力
  
,
不如
  
;
jiǎng
shù
技术
  
,
jiàng
  

He does not match you in terms of strength, but he is more skillful.

10
Jiǎng
努力
lái
  
,
努力
duō
le
  

Talking about trying hard, he's working harder than you.

讲 also means “to lay emphasis on or pay special attention to”.
11
Cóngxiǎo
从小
jiùyào
就要
yǎngchéng
养成
jiǎng
wèishēng
卫生
de
hǎo
guàn
习惯
  

We should develop a good hygiene habit.

12
Péngyou
朋友
zhījiān
之间
yào
jiǎng
xìnyòng
信用
  

There should be credit between friends.

13
企业
yào
jiǎng
xiào
效益
  

The enterprise must strive for effect and benefit.

说 sometimes means "to criticize or reproach".
14
Háizi
孩子
le
huò
  
,
bèi
ma
妈妈
shuō
le
dùn
  

The child was criticized by his mother for his bad deed.

15
Yīnwèi
因为
lián
连续
tiān
chídào
迟到
  
,
zuótiān
昨天
āi
shuō
le
  

He was scolded yesterday because he was late successively for several times.

说 can also mean "to recommend somebody for marriage.
16
Lǎorén
老人
jiàndào
见到
dānshēn
单身
de
qīngniánrén
青年人
  
,
jiù
huì
不会
cuòguò
错过
shuōméi
说媒
de
huì
机会
  

When the old man sees a single young man, he will not miss an opportunity as a matchmaker.

17
Nánhái
男孩
jīnnián
今年
dōu
30
30
suì
le
  
,
ma
妈妈
qiè
迫切
xiǎng
gěi
shuō
媳妇
  

The boys are all 30 years old this year, and his mother was eager to introduce him to a wife.

18
hái
女孩
jīng
已经
28
28
suì
le
  
,
ma
妈妈
xiǎng
gěi
shuō
jia
婆家
  

The girl is 28 years old, and her mother wants to find a husband for her.