be up to: be left to (sb.) to decide：取決于(某人)的,須由(某人)決定的

eg:I had to walk fast to keep up with him. 我必須走... | Jack's having trouble keeping up with the other students in his class. 杰克... | be up to: be left to (sb.) to decide取決于(某人)的,須由(某人)決定的

jibe with：與...一致

in the strictest sense 在最嚴格的意義上 | jibe with 與...一致 | keep abreast with 跟上(keep up with)

jibe with：與...一致來源:考試大

in the strictest sense 在最嚴格的意義上 | jibe with 與...一致來源:考試大 | keep abreast with 跟上(keep up with)

keep a secret：保守秘密來源

455.keep up with 跟上;不落后;來源:www.examda.com | 456.keep a secret 保守秘密來源:www.examda.com | 457.keep away from 遠離來源:www.examda.com

keep off sth：不接近

4. keep clean 保持整潔 | 5. keep off sth 不接近... | 6. keep up with 追上,趕上

keep on doing sth：繼續(xù)做某事

453. keep on doing sth. 繼續(xù)做某事 | 454. keep off 避開;不接近 | 455. keep up with 跟上;不落后;

keep sth from sb：把某事瞞著某人

keep sb from doing 阻止某人做某事 | keep sth from sb 把某事瞞著某人 | keep up with 跟上

keep to：保持,堅持

keep out of躲開,置身......之外 | keep to保持,堅持 | keep up with向......看齊,跟上......

keep to 1：遵守,信守2.堅持

keep sb's head 保持鎮(zhèn)靜 | keep to 1.遵守,信守2.堅持 | keep up with 跟上

up . wake up：喚醒,叫醒",不能說

3.up with. keep up with"跟上". | 4.up . wake up"喚醒,叫醒",不能說wake up her. | 5.off. take off"起飛",還有"脫掉;減掉"等意.