that ＋ 子句・what ＋ 子句
名詞子句：that、what、whether
Noun clauses: that, what, whether — English grammar, senior high
接續
that ＋ 完整子句（…這件事）・what ＋ 缺東西的子句（…的東西）・whether／if ＋ 子句（是否）
that + complete clause · what + clause missing something (the thing that) · whether / if + clause
說明
一個子句可以當名詞用：That he lied surprised me.（他說謊這件事讓我驚訝。）What you said is true.（你說的是真的。）I don't know whether he'll come. what 等於 the thing that，後面的子句少一個受詞或主詞。
A clause can work as a noun: That he lied surprised me. What you said is true. I don't know whether he'll come. what = the thing that, and its clause is missing an object or subject.
注意事項
- 主詞是 that 子句時，常改成 It ... that：It surprised me that he lied.A that clause subject is often moved: It surprised me that he lied.
常見錯誤
- ✗ That you need is a good rest.
✓ What you need is a good rest.
need 缺受詞，用 what。need lacks an object: what. - ✗ I can't believe what she won the contest.
✓ I can't believe that she won the contest.
子句完整，用 that。The clause is complete: that.
例句
What I really want is a long vacation.
我真正想要的是一個長假。
The problem is that we don't have enough time.
問題是我們時間不夠。
Whether we go or not depends on the weather.
要不要去要看天氣。
練習
在 Hanabiの小天地 聽例句的錄音、做 3 題練習，答對 2/3 就算學會，進度會記下來。
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