| 单词 | back |
| 释义 | back n.背（面），后面/a.后面的/adv.在后，向后；回，回复/vi.使后退，使倒退；支持 〖题〗We had to ___ dried milk as fresh milk wasn't available. A.add up to B.face up to C.fall back on D.carry on with 〖解〗答案C。fall back on（别的手段无效后）求助于，传而依靠。该短语除了作用谓语动词外，还常常用在名词之后作定语，如In an emergency we can have our savings to fall back on.；add up to总计，（总起来）说明，意味着；face up to勇敢地面对；carry on with继续做……。 〖词组〗at one's back支持某人；be glad to see the back of someone愿意某人走掉；behind one's back背着某人（说坏话等）；break the back of完成最困难的部分；have one's back to the wall处境困难；on one's back仰卧；turn one's back on不理，背弃；fall back后退；fall back on (upon)有……可以依靠；get back at报复；go back on背弃，不遵守（诺言）；hang back畏缩不前，犹豫踌躇；hold back控制住，拖累，踌躇不前；keep back保留，留下，忍住（眼泪）；look back回顾；put back延期，推迟；back on(to)后面是，背靠着；back out(of)改变主意，不遵守（诺言，合同等） |
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