如何区分 did,didn't ,do ,does ,doesn't how used did,didn't ,do ,does ,doesn't ??????
Jul 30, 2014 11:58 AM
Answers · 2
Present tense: do / does(he/she/it) Past tense: did Negatives: don't / doesn't, didn't
July 30, 2014
Do (present) I do study Chinese. Didn't/did (Past) I didn't eat it. I did eat it. Does/doesn't (He/she with present) He does eat apples. He doesn't eat apples.
September 20, 2014
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