句子“He could catch him, but he doesn't. ”中为什么是does而不是did

句子“He could catch him, but he doesn't. ”中为什么是does而不是did My cousin tried to catch it.He could not用but合并句子 .He could hardly catch the train反义疑问句He could hardly catch the train,______ _____? it to he catch wants连成句子 连词成句but he he He thought could coulen't the catch ball Tom was very late.He could not catch the bus(同义句改写)Tom was ------ late----- he catch the bus he got up early in order that he could ___ the train.填catch还是catch up with. 对so that引导的句子提问用什么He got up early so that he could catch the early bus.对so that以及后面的句子提问 I could not catch he ran so slowly that he could not catch up with others 同义句 He got up early so that he could catch the first bus he was running as quickly as he could ________ (catch)the bus .该用哪种形式. Jack ran very quickly( )he could catch the eaJack ran very quickly( )he could catch the early bus A.if B.when C.beause D.so that The boy ran to catch the bus(改为同义句）The boy ran ---- -----he could catch the bus. 根据所给首字母或汉语写出句中所缺单词 1.we ran very fast .L_____,we were in time to catch the train2.The cake was so big.He could not eat it all h_____,so he gave some to me.3.I w____ where he is.I have something important to tell hi He studied harder so that he could catch up with pthers的同义句He studied harder ( )( )( )catch up with others take out 和 put out的区别?reach 和 catch的区别?The wind blew his hat into the river.He (took) put out his hand and tried to (catch) reach it but he could not so he jumped into the river and got it.句子中打括号的词为什么不用?take 翻译：He ran so quickly that I could not catch him.