新目标七年级下册Units10-123.ppt

2. Then the guide taught us how to make a model robot. “疑问词+不定式”结构常用在know, decide, find out, tell, forget, remember, see, understand等动词或短语后作宾语，相当于宾语从句。当宾语从句的主语与主句的主语相同时，宾语从句可转换成“疑问句+不定式”结构。 3. — How was your trip last week? — It was excellent. 这是含有be动词的一般过去时的句子。一般过去时的标志词有yesterday, last weekend, two days ago, in 2010, just now, a moment ago等。 含有be动词的一般过去时的四种结构： （1）肯定句：主语+was/ were+其他. （2）否定句：主语+was/ were+ not+其他. （3）一般疑问句：Was/Were+主语+其他？ （4）特殊疑问句：特殊疑问词+一般疑问句？ 4. But I was so tired that I went to sleep early. 此句式结构为“so+形容词/ 副词+that…”，以为“如此……以至于……”。 [拓展] “so…that”可以和“too…to…”结构进行句型转换。 some和any的用法 1. 一般说来，some用于肯定句，any用于否定 句和疑问句。 e.g. She wants some juice. She doesn’t want any milk. 2. any可以用于条件句中。 e.g. If you have any trouble, please let me know. 3. some可以用于疑问句的情况。 常用于款待用语或问句的实质等于提出一个要求并希望得到肯定的回答时，这类用语中的some不能用any代替。 e.g. Would you like some more tea? Could you get me some bread? 一般过去时 一、用法 ▲一般过去时表示过去某个时间或某一段时间内发生的动作或存在的状态，常和表示过去的时间状语连用，如yesterday, the day before yesterday, ... ago, ... later, just now, at that moment, last ..., in 2001, in the past, every day last year等。如： He was in the park yesterday afternoon. I stayed at home from Monday to Friday last week. Tom lived with his grandparents in the past. ▲一般过去时表示过去经常或反复发生的动作，常与often, usually, always等频度副词连用。如： When we were young, we often played ping-pong together. Alice always walked to her office a few years ago. ▲在含有宾语从句的复合句中，如果主句为一般过去时，宾语从句常用相应的过去时态。如： Mr. Steen asked May why she was late for school. Carl told me that he would buy a new mobile phone the next month. She said she was writing to her friend at 10:00 p.m. yesterday. ▲如果主句用现在完成时，since引导的从句常用一般过去时。如： Lisa hasn’t phoned me since she went to America. 二、结构 ▲一般过去时肯定句的谓语部分要用动词的过去式。 be动词的过去式为was / were。实义动词的过去式规则变化通常在其后加-ed，不规则变化要牢记。 ▲含was / were 的一般过去时的否定式是在was / were后加not；疑问式是把was / were提至主语前。如： Ann was at home yesterday afternoon. → Ann wasn’t at home yesterday afternoon. Was Ann at home yesterday afternoon? ▲含实义动词的一般过去时的