疑問詞子句

疑問詞子句為名詞子句的一種。名詞子句包含一個主詞及一個動詞，在句子中的作用與單數名詞相同。
Let's ask the secretary where we should go.
The manager told us what to do.
I wish I knew why she left the company.

His story was interesting. --> What he said was interesting.
I don't know the teacher. --> I don't know who she is.

疑問詞子句可為動詞的主詞或受詞。
What he said was interesting. 當主詞
I don't know who she is.  當受詞

下列字詞經常用作疑問詞子句的開頭。
Words used to begin question-word clauses : when, where, why, how, who, what

一般而言，疑問詞子句的句型如下：
疑問詞 + 主詞 + 動詞。
We discussed how the meeting went.
how the meeting went
                  S          V

I don't know who the manager is.
who the manager is
                  S         V

使用疑問詞來形成問句時，助動詞 "do"、"does" 和 "did" 通常直接置於疑問詞後面。
用疑問詞來形成疑問詞子句時，則不要將這些助動詞置於疑問詞後面。
使用疑問詞來形成問句 : What did they announce at the meeting?
用疑問詞來形成疑問詞子句 : What they announced at the meeting surprised everyone.

使用疑問詞來形成問句 : Why do they change the policy every year?
用疑問詞來形成疑問詞子句 : Nobody knows why they change the policy every year.

Question-word clauses with what or who
"what" 或 "who" 可用來作為疑問詞子句的主詞。
當 "what" 或 "who" 作為疑問詞子句的主詞時，會使用下列的句型：
"what/who" + V。
I want to know what happened.
                            S         V
I don't know who is in the office.
                        S    V


例句:
1. Devon: How long has Mark worked in this industry?

Devon wants to know how long Mark has worked in this industry

解釋:上述答案是正確的。疑問詞子句是動詞 know 的受詞。在疑問詞子句中，主詞要置於動詞之前。

2. Devon: When did Mark first come to Japan?
Devon wants to know when Mark first came to Japan

解釋:上述答案是正確的。疑問詞子句是動詞 know 的受詞。在疑問詞子句中，主詞要置於動詞之前。

去掉助動詞 動詞時態要改變

3. Devon: Why is Mark interested in this position?
Devon wants to know why Mark is interested in this position

解釋:上述答案是正確的。疑問詞子句是動詞 know 的受詞。在疑問詞子句中，主詞要置於動詞之前。

4. Devon: What are Mark's salary requirements?
Devon wants to know what Mark's salary requirements are解釋:上述答案是正確的。疑問詞子句是動詞 know 的受詞。在疑問詞子句中，主詞要置於動詞之前。

5. Devon: Who told Mark about the position?
Devon wants to know who told Mark about the position解釋:上述答案是正確的。疑問詞子句是動詞 know 的受詞。在疑問詞子句中，主詞要置於動詞之前。

6. Devon: Where did Mark work in Germany?
Devon wants to know where Mark worked in Germany解釋:上述答案是正確的。疑問詞子句是動詞 know 的受詞。在疑問詞子句中，主詞要置於動詞之前。
去掉助動詞 動詞時態要改變