be doing when用法,with的用法

be doing when用法,with的用法

一. be doing when ——正在做某事，这时Iwas doingmy homeworkwhenthe bell rang. 我正在写作业，这时候铃声响了。The studentswere talkingloudlywhenthewhen的用法四种句型：be doing sth…when;be about to do sth…when;hardly…when;had just done…when。when的句型1.be doing sth…when…例：He was still smiling when the do

be doing…when 正在做某事，这时（突然），when为并列连词，表示“就在这时（突然）”注意事项：be doing 中be动词用过去进行时was/were, when引导的分句中用过去时。I was walkin该句子中，sb be doing sth when 意为“某人正在做某事，这时”。When相当于at that time。【例句】We were watching TV when our mom came in. 我们正在看电视，这时候妈妈进

一.Be doing when类似用法有哪些？be doing sth…when正要做某事，恰好。when后面的那件事情发生。基本结构：was/were+going to + do;would/should + do。否定形式：was/were/1、be doing when。意思是：表示“正在做某事，就在这时……”用法例句：I was watching the football match when h

1、be doing sth…when…例：He was still smiling when the door opened and his wife came in. 他正笑着的时候门突然开了，他妻子走了进来。2、be about to bedoingwhen用法用于表示当某人或某物正在或正要做某事就在这时突然又发生了另一件事be doing when用法“be doing sth.when”用于表示当某人或某物正在或正要做某事，就