（2017·山東東營·31）WeChat Pay（微信支付） makes our life convenient. We can buy things ________ we don't take any money.

A. unless B. because

C. even if D. so that

C 【解析】句意：微信支付讓我們的生活很便利，即使我們沒帶錢我們都能買東西。A. unless除非；B. because因為；C. even if即使；D. so that以便，為了。結(jié)合句意可知，此句是even if引導(dǎo)的讓步狀語從句．故答案選C。

一The environment is terrible.

一I think it will be even worse the government takes actions to protect it.

A. until B. when C. if D. unless

D 【解析】句意：-環(huán)境太糟糕了。-我認(rèn)為它會變得更差，除非政府采取行動來保護(hù)環(huán)境。until直到…時候；when當(dāng)…時候；if如果；unless除非，如果不。根據(jù)句意可知，如果政府不采取行動保護(hù)環(huán)境，那么它就會變得更糟。故應(yīng)選D。

My arm is still painful, I'm going to see a doctor.

A. so B. for C. but D. or

A 【解析】句意：我的胳膊仍然很疼，所以我要去看醫(yī)生。so因此，所以；for為了，因為；but但是，表示轉(zhuǎn)折；or或者，否則。根據(jù)句意可知，這兩句話是因果關(guān)系，故應(yīng)選A。

Jack's mother was so tired. She fell asleep she lay down on the bed.

A. until B. as soon as

C. unless D. although

B 【解析】句意：Jack的媽媽是如此的累，她一躺在床上就睡著了。until直到…時候，引導(dǎo)時間狀語從句；as soon as一…就…，引導(dǎo)時間狀語從句；unless除非，如果不，引導(dǎo)條件狀語從句；although盡管，雖然，引導(dǎo)讓步狀語從句。根據(jù)句意可知應(yīng)選B。

Our teachers have been with us for nearly three years we came to junior high school. We should thank them for what they have done for us.

A. until B. before C. since

C 【解析】句意：自從我們來到初中，我們的老師和我們在一起將近三年了。我們應(yīng)該為他們?yōu)槲覀兯�做的事情表示感謝。until直到…時候；before在…之前；since自從。這三個詞都可以引導(dǎo)時間狀語從句，根據(jù)句意和句中使用的時態(tài)可知應(yīng)選C，since從句中用一般過去時態(tài)，主句用現(xiàn)在完成時態(tài)。

riding shared bikes(共享單車)is an environmentally friendly way to travel, many of the bikes are thrown everywhere.

A. Although B. As C. Unless D. Until

A 【解析】句意：雖然騎共享單車是一種對環(huán)境有利的出行方式，但是很多自行車被扔得到處都是。Although雖然，盡管，引導(dǎo)讓步狀語從句；As當(dāng)…使時候；由于；Unless除非，如果不，引導(dǎo)條件狀語從句；Until直到…時候，引導(dǎo)時間狀語從句。根據(jù)句意可知，這兩句話之間是轉(zhuǎn)折的關(guān)系，故應(yīng)選A。

（2017年河南） The actor was happy he got a part in the a movie, _____ the part was a small one .

A. since B. while C. though D. unless

C 【解析】句意：這個演員很高興他在這部電影中有一個角色，盡管是一個小角色。since既然；while當(dāng)…時候；though雖然；unless除非。結(jié)合句意，后一句表示角色小，前一句表示他對這個角色感到高興，故前后表示讓步關(guān)系，故用連詞though。故選C。

一The plane won't take off the thick clouds move away.

一Let's wait patiently for the announcement from the airport.

A. since B. through C. while D. until

D 【解析】句意：-直到烏云散開了飛機(jī)才會起飛。-讓我們耐心地等機(jī)場的通知吧。since自從；through通過；while當(dāng)…時候；until直到…時候。這句話使用的句型是not…until…直到…時候才…，符合句意，故選D。

Every day, he gets up early he can catch the first bus.

A. because B. since C. when D. so that

D 【解析】句意：每天他都早起為的是他能趕上第一趟公共汽車。because 因為，引導(dǎo)原因狀語從句；since自從；when當(dāng)…時候；so that為的是，引導(dǎo)目的狀語從句。根據(jù)句意可知，空后的句子表示前面gets up early的目的，故應(yīng)選D。

Jenny has gone to Shanghai on business, but she'll be back in 3 days. I will call you .

A. as soon as she returns

B. when she will return

C. after she returned

D. if she will return

A 【解析】句意：Jenny去上海出差了，但是她三天后才回來。她一回來我就給你打電話。as soon as she returns她一回來；when she will return當(dāng)她將回來的時候；after she returned在她回來之后，是一般過去時態(tài)；if she will return如果她將回來。時間狀語從句或條件狀語從句中用一般現(xiàn)在時態(tài)，主句用一般將來時態(tài)，故B、C和D三個...