2.In the summer of 1905, this outspoken young man was rocking his one­year­old baby when he was suddenly inspired.

1905年夏天，这个直率的年轻人正在摇着他一岁大的孩子时，突然灵感就产生了。 be doing ... when ...意为"......正......这时/那时突然......"。 I was_reading_a_book_attentively when an old friend came to see me.

我正在全神贯注地读书，这时忽然一位老友来访。 3.Without the breakthroughs of these pioneers in science and technology, whether lucky or planned, the world as we know it today would have been a completely different place.

如果没有这些科技先驱者的突破，是否是由于幸运还是有所计划，我们今天所熟悉的这个世界将会是个完全不同的世界。 含蓄虚拟条件句，without短语为含蓄虚拟条件。 Without my English teacher's help, I_wouldn't_have_made_such_rapid_progress.

如果没有英语老师的帮助，我就不会取得这么快的进步。 　　

　　1．(教材P22)present

　　(1)vt.主持(电视或广播节目)；展现，呈现；赠送，颁发；提交，宣读

　　present sb. with sth.　　　 把......送给......，给......颁发......

　　present sth. to sb. 把......送给......，给......颁发......

　　present sth. (to sb.) (for sth.) 提交......(给......)(以供......)

　　①She used to present a gardening programme on TV.

　　她曾在电视上主持过一个园艺节目。

　　②You need to present yourself better when you have a chance to deliver a speech.

　　当你有机会发表演讲的时候，你需要更好地展现自己。

　　③You must present your library ticket every time you borrow books.

　　你每次借书都必须出示借书证。

　　④He presented a silver cup to the winner.

　　＝He presented the winner with a silver cup.

他把银杯颁发给获胜者。