$1$.What did James have breakfast with this morning?

$2$.When did Thomas finish his homework?

$3$.Did they use their computer to do the test?

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$1$.Phó từ What : cái gì

$\rightarrow$ What + auxiliary verb(trợ động từ) + S + V?

$2$.Phó từ When : khi nào

$\rightarrow$ When + auxiliary verb (be, do hoặc have) + S + V?

$3$.Cấu trúc thì QKĐ :

$\rightarrow$ Did + S + Vinf?

`1`.What did James have breakfast with this morning ?

`\rightarrow` Thì QKĐ ( NV ) : Did + S + V `?` ( `1 - 3` )

`\rightarrow` What dùng để hỏi về cái gì

`2`.When did Thomas finish his homework ?

`\rightarrow` When dùng để hỏi về mốc thời gian

`3`.Did they use their computer to do the test ?

`\text{# Eternal}`