So, But, Therefore, However

Polly’s watch was broken _____________ she borrowed mine

• so

• because

• but

• therefore

Answer explanation

Khi nối 2 mệnh đề độc lập, truớc so ta dùng |"dấu phẩy" | còn trước therefore ta dùng |"dấu chấm phẩy"|. Khi đó so và therefore sẽ có nghĩa là "vì vậy/cho nên".

My family went to Africa _____________ we wanted to study the wild animals

• however

• because

• so

• but

Melissa tried to read the book _____________ she couldn’t understand it

• however

• therefore

• but

• and

She isn’t English _____________, she speaks English perfectly

• but

• however

• and

• so

Answer explanation

• 'But' không đứng đầu câu (trong văn viết), thường đứng giữa câu, và trước nó có dấu (,).

'However' đứng đầu câu, sau nó có dấu (,); hoặc đứng giữa câu trước nó có dấu (;), và sau nó có dấu (,) hoặc không có.

They went to town _____________ bought a lot of clothes

• so

• therefore

• and

• but

The road was underwater_____________, the police closed it to traffic.

• and

• so

• but

• therefore

Answer explanation

Không dùng "so" vì trước "so" cần có "dấu phẩy".

I haven’t got a car _____________ I’ve got a motorbike.

• and

• but

• however

• because

Answer explanation

However đứng trước dấu phẩy hoặc đứng sau dấu chấm.

The air is polluted _____________ there’s too much traffic.

• so

• because

• however

• but

Which color do you want - red, green, yellow _____________ blue?

• and

• or

• with

• end

She’s working late next Friday _____________ she can’t come to the party

• however

• therefore

• so

• and