"see to it that..."就是"make sure that..."的意思,確保,務(wù)使.

Can you see to it that the fax goes this afternoon? 你保證今天下午就把傳真發(fā)出去,行嗎?

4.He feels like he's on a losing streak. 他覺得自己總是在失敗.

Streak就是中文里"手氣,運(yùn)氣"的意思. 而on a losing streak就是指手氣不好,手氣背,老是輸?shù)囊馑?

a streak of good luck 運(yùn)氣好的一段時(shí)間
to hit(= have)a winning streak 碰上順的時(shí)候
a lucky/unlucky streak 運(yùn)氣好╱不好的階段

5.As you know, the winner gets a big party, and they can invite whoever they want, which could go a long way in helping her fit in.你知道,獲勝者將會(huì)得到一個(gè)慶祝晚會(huì),他們想請(qǐng)誰就能請(qǐng)誰,這對(duì)于幫助她融入集體有很大作用.

"go a long way in/towards doing sth:就是對(duì)做某事幫助很大的意思.

The new law goes a long way towards solving the problem. 新的法律十分有助于解決這一問題.