I am too sick to go to the class.

我病得太严重了，不能去上课。

youdao

I was too sick to go to school.

我病得太重，以至于无法上学。

youdao

Imagine knowing you’ll be too sick to go to work, before the faintest hint of a runny nose or a sore throat.

假设这么一种情况：可以根据一些非常微小的表现诊断你可能将会影响你工作的疾病，比如流鼻涕、喉咙痛。

youdao

The systems are especially useful for those who are too sick to go a long way for water.

VOA: special.2009.07.27

Sometimes,when people get sick, they go to a small pharmacy, boutique or street corner, where vendors sell medicines that aren't effective.

VOA: standard.2009.04.25

Dr.Rwagacondo says if children get sick, they don't go to school and fall behind scholastically.

VOA: standard.2009.04.25

Genentech offers take-home dinners and helps employees find last-minute babysitters when a child is too sick to go to school.

FORBES: Silicon Valley Employers Go Wild With Lavish Employee Benefits

With the advent of flu season, it can be tough to know what to do when you know you are too sick to go to work, but are worried about the repercussions of skipping a day.

CNN: Food workers, nurses forced to work sick

It's a population that has been virtually hidden for several reasons, including the reluctance of many sick parents to go public with their infirmity.

CNN: Help for a 'hidden population' of caregiving kids