35
(A) While
(B) After
(C) Later
(D) As

While (多義詞)

1. 作為連接詞，表示 "雖然"、"然而"、"但是" 的意思，引導對比或轉折的兩個句子。例如：

• While I appreciate your concern, I don't think you need to worry so much.
• The party was a lot of fun, while the cleanup was a lot of work.

1. 作為介詞，表示 "在...期間"，強調一個時間段內的活動或事件。例如：

• While I was studying abroad, I learned a lot about different cultures.
• He listened to music while he was jogging in the park.

1. 作為副詞，表示 "同時"，通常與動詞進行搭配使用。例如：

• She can read while listening to music.
• He was cooking while talking on the phone.

需要注意的是，當 "while" 用作連接詞時，後面的句子要使用相對應的詞語來表達 "但是" 或 "然而" 的意思，例如 "but"、"however" 等。另外， "while" 也可以表示 "同時"，但在這種情況下，常常可以用 "as" 或 "at the same time" 來替換，以避免混淆。

After

1. 作為介詞，表示 "在...之後"，通常用來描述時間或順序。例如：

• We went to the park after lunch.
• After the meeting, we discussed the next steps.

1. 作為連接詞，表示 "在...之後"，引導時間或順序的從句。例如：

• After he finished his homework, he went to bed.
• We went to the movies after we had dinner.

1. 作為副詞，表示 "之後"，通常與動詞一起使用，表示在某個時間之後發生的事情。例如：

• She arrived at the party late, and everyone had already started eating. After, she quickly grabbed a plate and joined in.
• After the concert, we went out for a drink.

需要注意的是，在使用 "after" 時，要注意時態和句子結構的一致性。例如，當 "after" 用作連接詞時，後面的從句要使用相應的時態，以匹配前面的主句。另外，當 "after" 用作介詞時，其後面的時間點通常需要使用名詞或代詞來表示。

Later 副詞

1. 表示 "稍後"、"過一會兒"，通常用在對話中，表示稍後再做某事。例如：

• Can we discuss this later?
• I'll call you later.

1. 表示 "之後"，通常用來描述時間上的先後順序。例如：

• She went to the gym earlier today, but later she decided to go for a walk in the park.
• Later, we went to see a movie.

1. 表示 "晚一點"，通常用來比較兩個時間點，表示後面的時間點比前面的時間點晚。例如：

• Let's meet at the coffee shop at 2 pm. Or, if that doesn't work, we can meet later at 3 pm.
• I usually wake up at 7 am on weekdays, but on weekends I wake up later.

需要注意的是，在使用 "later" 時，要注意上下文的語境，以避免產生歧義。例如，當 "later" 用來表示時間先後順序時，常常需要與其他時間狀態詞或詞組一起使用，如 "earlier"、"at that time" 等，以更清晰地表達時間的順序。另外，當 "later" 用於描述時間點時，其後面通常需要使用特定的時間單位，例如 "pm"、"in the evening" 等。

As 介詞和連接詞

1. 作為連接詞，表示 "當...的時候"，通常用來引導同時發生的兩個動作或事件。例如：

• As I was walking down the street, I saw an old friend.
• As we were watching the movie, the power went out.

1. 作為介詞，表示 "像...一樣"，用來比較兩個事物的相似之處。例如：

• He's as tall as his father.
• The car is as fast as a bullet.

1. 作為副詞，表示 "同時"、"當時"，用來強調同時發生的事情。例如：

• She can sing and play the guitar as well.
• As he entered the room, everyone turned to look at him.

1. 作為連接詞，表示 "因為"、"由於"，引導原因狀語從句。例如：

• As I was feeling tired, I decided to go to bed early.
• As she was late for work, she had to rush to catch up.