得≠ 能 In Chinese : Verb+得 （"V." before "得"） 能 = can So "我做得完。"and "我能做完。"two sentences means are similar ，but 得 is not 能。 不 + 能 = 不能（can't ) 能 and 不能 are opposites. If you say "我能……" = "I can……" "我不能……" = "I can't……" Hope this helps. :-)

Hello! They are all correct, but it is more common to use 能 for a positive and a complement with 不 for a negative. For example, the most common expressions would be: positive:我能做完。 negative:我做不完。 The following are also correct, but less common: positive: 我做得完。 negative: 我不能做完。 In my experience, using "不能" is still used occasionally, but using 得 to express ability to do something is extremely rare.

Actually, they are the same sentence, just omit different character. 我(能)做得完 ---能 is omit here 我能做(得)完 ---得 is omit here

得：用在单音节动词的后面，表示可能：修～好、拿～动、爬～上去 so in this case, 得 almost = 能 the difference is: 得 = could 能 = can 得 contains a kind of emotion, so it's like "could". For example, someone says "你做得完吗？" he says like this because he wants to tell u that u must finish, or he wants to tell u that if u cant he can help u. Something like this. 你能做完吗？ --- 我能做完 --- 我不能做完 你做得完吗？ --- 我做得完 --- 我做不完