VOA慢速英语:An African Grain Joins the Gluten-Free Market for People With Celiac

be supposed to被认为,据说,应该

例句：Every student is supposed to know the school regulations.
      每个学生应该知道校规。

2.It interferes with the body's ability to absorb nutrients from food.

interfere with干预, 阻挠, 妨碍, 阻止

例句：That interferes with my plan.
      那干扰了我的计划。

      The noise interferes with my work.
      这噪音妨碍我的工作。

3.But celiac researcher Alessio Fasano says until recent years not much was known about the disease.

until recent years结构前置，起到强调作用，表示直到最近几年才有了比较多的了解。

知识拓展：

Not until位于句首时句子倒装：

Not until the child fell asleep did the mother leave the room.

如否定词不在句首不倒装：
　　
The mother didn't leave the room until the child fell asleep.

强调句型：

“not…until…”句型的强调结构为“It is not until…that…”应注意把否定词not转移到until前面。如：I didn't go home until rain stopped.(直到雨停了我才回家)。

　　强调句为：It was not until rain stopped that I went home.

　　I didn't know the news until yesterday.(直到昨天我才知道那个消息)

　　强调句为：It was not until yesterday that I knew the news.