英検2級unless・as long as・provided that・in caseの違い｜条件・例外・備えの独自40問【全訳・全解説】

問1

You may enter the exhibition ______ you show a valid ticket.

意味：有効な入場券を示すという条件で展示に入れる。

1. in case
2. provided that
3. although
4. because of

問2

Take a small flashlight ______ the power goes out during the trip.

意味：旅行中に停電した場合に備えて小型懐中電灯を持っていこう。

1. in case
2. unless
3. although
4. as soon as

問3

The workshop will take place outdoors ______ the forecast warns of dangerous winds.

意味：危険な強風の予報がない限り、講習会は屋外で開催される。

1. although
2. unless
3. because
4. since

問4

You can keep the borrowed book ______ you return it by the agreed date.

意味：約束した日に返す限り、その本を借り続けられる。

1. in case
2. even though
3. as long as
4. despite

問5

Bring your confirmation email ______ the staff cannot find your registration.

意味：係員が登録を見つけられない場合に備えて確認メールを持参しよう。

1. in case
2. unless
3. because of
4. despite

問6

The center will be open on Sunday ______ a severe storm forces it to close.

意味：深刻な嵐で閉鎖が必要にならない限り、センターは日曜も開く。

1. even if
2. unless
3. provided that
4. as long as

問7

The children may join the tour ______ an adult stays with them.

意味：大人が一緒にいることを条件に、子どもはツアーへ参加できる。

1. because of
2. in case
3. as long as
4. even if

問8

Pack an extra battery ______ your camera runs out of power.

意味：カメラの充電が切れた場合に備えて予備電池を詰めよう。

1. in case
2. unless
3. even though
4. instead of

問9

The museum will not accept late applications ______ the director approves an exception.

意味：館長が例外を認めない限り、博物館は遅れた申請を受け付けない。

1. if
2. unless
3. because
4. while

問10

The school will keep a paper copy ______ its online system stops working.

意味：オンラインシステムが停止した場合に備えて、学校は紙の控えを保管する。

1. so that
2. in case
3. as soon as
4. although

問11

______ the music lasts, the doors to the concert hall will remain closed.

意味：演奏が続いている間はコンサートホールの扉は閉じたままだ。

1. As long as
2. In case
3. Provided that
4. Unless

問12

______ of an emergency, use the exit beside the staircase.

意味：緊急時には階段横の出口を使ってください。

1. Unless
2. In case
3. As long
4. Provided

問13

The event will continue indoors ______ it rains heavily.

意味：たとえ大雨が降っても、その行事は屋内で続行される。

1. even if
2. unless
3. because of
4. despite

問14

The train pass remains valid ______ the holder follows the conditions printed on it.

意味：記載条件を守ることを前提に、その乗車券は有効だ。

1. in case
2. provided that
3. even though
4. despite

問15

Please take a photograph of the notice ______ you forget the directions later.

意味：あとで道順を忘れた場合に備えて、その案内を撮影しておいてください。

1. unless
2. as long as
3. in case
4. although

問16

The organizers will cancel the outdoor ceremony ______ the weather becomes dangerous.

意味：天候が危険になった場合、主催者は屋外式典を中止する。

1. if
2. in case
3. unless
4. even if

問17

You cannot borrow the equipment ______ you complete the safety training.

意味：安全講習を修了しなければ、器具を借りられない。

1. if
2. although
3. unless
4. because of

問18

The exhibition will remain free ______ visitors follow the museum rules.

意味：来館者が規則を守る限り、展示は無料のままだ。

1. as long as
2. in case
3. even if
4. rather than

問19

Bring a printed map ______ your phone cannot connect to the internet.

意味：携帯がネットにつながらない場合に備え、印刷地図を持参しよう。

1. unless
2. in case
3. as long as
4. even though

問20

The volunteer program will run next term ______ enough qualified instructors are available.

意味：適切な指導者を十分確保できることを条件に、ボランティア制度は来学期も実施される。

1. because of
2. provided that
3. in case
4. despite

問21

If you do not arrive by six, we will release your reservation.

指定語句：unless

問22

Take a paper timetable because your phone might lose its connection.

指定語句：in case

問23

You may use the study room if you keep the noise down.

指定語句：as long as

問24

If there is a fire, follow the staff’s instructions.

指定語句：in case of

問25

If you do not show your identification, you cannot enter.

指定語句：unless

問26

You will receive a certificate if you attend every session.

指定語句：provided that

問27

The indoor tour will continue whether it rains or not.

指定語句：even if

問28

Prepare printed handouts as a precaution against a possible projector failure.

指定語句：in case

資料1｜市立博物館の体験講座

Thank you for registering for the museum’s history workshop on Sunday. The program begins at ten, but participants should arrive at the east entrance by nine forty-five. The main entrance will be closed for repairs.

You may borrow an audio guide provided that you request it by Friday. The museum has a limited number of devices and cannot guarantee one for visitors who arrive without making a request. Staff will offer printed maps in case the electronic guides stop working.

Children under twelve can join as long as an adult accompanies them. The workshop will take place even if it rains because all activities are indoors. However, the museum may postpone the event if the building must close for safety reasons.

問29：Which visitors can borrow an audio guide under the stated rule?

1. Anyone who arrives Sunday
2. Those who request one by Friday
3. Only children
4. Everyone who brings a phone

問30：Why are printed maps prepared?

1. To replace all staff
2. In case electronic guides stop working
3. Because maps are forbidden
4. Unless visitors speak English

問31：Will ordinary rain cancel the workshop?

1. Yes, in every case
2. No, because activities are indoors
3. Yes, because the east entrance is closed
4. The schedule has already been canceled

資料2｜地域の野外映画会

The community movie event is planned for Saturday evening in the central park. Organizers will show the film outdoors unless the forecast includes thunderstorms or very strong winds. Light rain alone will not necessarily cause a cancellation.

Visitors may bring folding chairs as long as they leave the walking routes clear. The organizers recommend taking a warm jacket in case the temperature drops after sunset. Drinking water will be available, but visitors should not expect hot meals at the site.

If severe weather is forecast, the event will move to the town hall provided that the building is available. Organizers will publish a final notice on Friday evening. They cannot promise an indoor showing until the hall reservation has been confirmed.

問32：When will the film normally be shown outdoors?

1. Even during severe thunderstorms
2. Unless dangerous weather is forecast
3. Only if it rains heavily
4. Only if every visitor brings a chair

問33：Why should visitors bring a warm jacket?

1. Because it is required for entry
2. In case the evening becomes cold
3. To cover the projector
4. Because hot meals are offered

問34：What condition applies to the indoor alternative?

1. The town hall must be available
2. Every visitor must pay extra
3. It must begin before noon
4. The park must remain open

資料3｜学校の校外観察活動

Next Thursday, students will visit a coastal nature center. The group will leave school at eight thirty unless the bus company reports a major safety problem. Parents will receive an email if departure plans change.

Students should bring notebooks and pencils, as well as a small waterproof bag in case their belongings get wet. The school will provide safety gloves for the beach observation activity. Students may photograph shells and rocks as long as they do not collect protected plants or disturb animals.

Teachers will conduct a short outdoor activity even if there is light rain. However, if local authorities issue a severe weather warning, the group will stay inside the nature center. The school will follow the official safety guidance rather than trying to complete every planned activity.

問35：What could cause a change in departure plans?

1. Any light rain
2. A major bus safety problem
3. A missing notebook
4. A student taking photographs

問36：What is the waterproof bag for?

1. Protecting belongings if they get wet
2. Collecting protected plants
3. Replacing the bus seats
4. Storing live animals

問37：What will happen if severe weather is officially warned about?

1. Students will remain indoors
2. The bus will leave earlier
3. Every outdoor activity must continue
4. Students will collect more plants

資料4｜図書館の機器貸出と返却

The public library lends tablet computers to registered members for short study projects. Members may borrow a device for five days provided that they have completed the library’s basic technology guidance session.

Borrowers should save copies of important files in case a device stops working. The library does not guarantee that personal files will remain on the tablet after it has been returned. Borrowers may request an extension as long as no other member has reserved the same device.

Unless special permission has been granted, tablets must be returned by five on the final day. Anyone who discovers damage should report it promptly rather than attempting complicated repairs. Staff can arrange professional checks when necessary.

問38：Who may borrow a tablet for five days?

1. Any visitor without registration
2. Members who completed guidance
3. Only library employees
4. Anyone who pays cash

問39：Why are borrowers told to save copies of their files?

1. In case a tablet fails
2. To sell files to other members
3. Because the library will erase all accounts daily
4. To avoid needing instruction

問40：When can a borrower request an extension?

1. If another member is waiting
2. As long as no one else reserved the device
3. Only after the tablet is broken
4. Whenever the library is closed