なぜやるか

Part5の前置詞 vs 接続詞問題では「空所の後ろに S + V があるか（接続詞）、名詞句だけか（前置詞）」を判断する必要があります。前置詞句を ( ) で囲う練習をすることで、この判断が瞬時にできるようになります。また前置詞句を外してSVOを見つける習慣が、Part6・7の長文読解スピードを直接上げます。このLesson 2を終えると、1〜2個の前置詞句を含む文を正確に分解できるようになります。

やり方

前置詞句の見つけ方

前置詞 + 名詞（句）= 前置詞句。後ろに S + V が続かないことを確認する。

よく出る前置詞：

前置詞 vs 接続詞の判断

前置詞 + 名詞句 → ( )で囲う 例: (because of the rain)
接続詞 + S + V → < >で囲う 例: <because it rained>

because of / due to / owing to は前置詞句（後ろに名詞）
because / since / as は接続詞（後ろに S + V）

例文トレーニング

文1｜場所の前置詞句

原文: The annual conference will be held (at the downtown convention center).

S = The annual conference
V = will be held
( ) = at the downtown convention center ← 場所（どこで）

→ (at the downtown convention center) を外すと「The annual conference will be held.」が残る。

文2｜時間の前置詞句

原文: The team submitted the final proposal (before the deadline).

S = The team
V = submitted
O = the final proposal
( ) = before the deadline ← 時間（いつまでに）

→ 前置詞 before の後ろは名詞（the deadline）→ 前置詞句と判断。

文3｜前置詞句が2つある文

原文: The director signed the agreement (with the client) (during the meeting).

S = The director
V = signed
O = the agreement
( ) = with the client ← 関係（誰と）
( ) = during the meeting ← 時間（いつ）

→ 2つの ( ) を外すと「The director signed the agreement.」が残る。

文4｜前置詞 vs 接続詞の対比

A: The flight was delayed (because of heavy fog).
前置詞句 ← because of + 名詞句

B: <Because heavy fog had reduced visibility,> the flight was delayed.
副詞節 ← because + S + V

because of → 後ろに名詞だけ → ( ) で囲う
because → 後ろに S + V → < > で囲う

文5｜目的・方法の前置詞句

原文: The company launched the new product line (through an intensive digital marketing campaign)
(in three major metropolitan areas).

S = The company
V = launched
O = the new product line
( ) = through an intensive digital marketing campaign ← 手段（どのように）
( ) = in three major metropolitan areas← 場所（どこで）

→ 2つの ( ) を外すと「The company launched the new product line.」が残る。

実戦問題

構造を分解しながら空所を埋めましょう。

Q1. The board approved the revised restructuring plan ------- considerable opposition from several senior members of the executive team.

(A) because　(B) although　(C) despite　(D) even though

Q2. The operations manager sent the updated logistics schedule to all regional coordinators ------- the implementation of the new distribution protocol.

(A) because　(B) while　(C) although　(D) prior to

Q3. The company expanded its product offerings ------- strong customer demand for more sustainable packaging alternatives in the domestic market.

(A) so that　(B) in response to　(C) in order that　(D) now that

Q4. The regional director submitted the quarterly performance report ------- the end of the business day on Friday, as required by the new internal reporting guidelines.

(A) until　(B) since　(C) as soon as　(D) by

Q5. ------- the strong performance of the Asia-Pacific division, the company’s total annual revenue exceeded projections by twelve percent.

(A) Thanks to　(B) Because　(C) As　(D) Since

正解一覧